Compound interest using practical (approximation) method

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Kyle wants to buy a car for $9200 in 2 years and 7 months time. How much does he have to invest today at j4 = 3.5% using the Practical method.

I feel like I'm doing it right but the answer is not correct.

9200 = P(1+0.035/4)10(1+0.035(1/12))

8407.90 = P