The fortune radical and the fortune kanji are exactly the same! But it also means occupy as well, so don’t forget that. Fortune and occupy both occupy the same radical.
To occupy some free time you have, you go and get your fortune told at a fortune teller. Your fortune is that you’ll have an encounter with a centaur (せん) in the near future. Just then you realize that the fortune teller is actually a centaur! The fortune has come true!