Answer:
Visualize how you would feel if you suddenly had a rare fortune.
Step-by-step explanation:
As you do not have more tools than what you are given by the text, and you are not sure wheter Elated is a synonym or an antonym and the text doesn´t make it clear, you can just visualize how would you feel if you had a rare fortune, and that would be the way to figure out the meaning of Elated.