1To arrive at or reach (a decision, conclusion, or stage); to attain a particular state or result.
議論の末、合意に至った。
After discussion, we reached an agreement.
検討を重ねたが、結論には至らなかった。
We examined it repeatedly but did not reach a conclusion.
その提案は採用に至るまでに多くの修正が加えられた。
The proposal underwent many revisions before being adopted.
2To get to or arrive at a place; to lead to a particular location or point.
この道をまっすぐ行けば山頂に至る。
If you go straight along this road, you'll reach the mountain summit.
階段を上ると広いホールに至る。
Climb the stairs and you arrive at a spacious hall.
3Used in expressions like '～に至っては' to single out an especially extreme case compared to others; emphasizes that a situation has reached a climax.
小さなミスなら仕方ないが、嘘をつくに至っては許されない。
A small mistake can be forgiven, but when it comes to telling lies, that is unacceptable.
彼の失敗は許せないが、暴力に至っては別問題だ。
His mistakes are unforgivable, but resorting to violence is a different matter entirely.
4(archaic) To come or arrive; an older, literary usage that is essentially unused in modern spoken Japanese and mostly encountered in classical or literary texts.