In order to find the total amount of money in the account, we can use the formula:

Where P is the final value, Po is the initial value, r is the rate, t is the time and n depends on the period the interest is compounded.
In this case, we have Po = 600, r = 0.04, t = 7 and n = 4 (because the interest is compounded quarterly), so we have:

Rouding to the nearest cent, we have an amount of 792.77