P(X > c) = 0.3732
To find c, you will need to refer to the z-score table in your textbook or computer wherever you have access to. The p-value is 0.3732. So you will need to find the p-value in the z-score table and look at the first two numbers on the left column of the table and the third number on the top row of the table.
c ≈ -0.322 ⇒ The table shows that c is closest to about 0.32 since it is hard to find the exact value of c.