Finding the Fourth Proportional to 2,982.50, 4,472.30 and 902.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,982.50 : 4,472.30 = 902.10 : x
2. Step 2: Convert to fraction form
   2,982.50/4,472.30 = 902.10/x
3. Step 3: Cross multiply
   2,982.50x = 4,472.30 × 902.10
4. Step 4: Simplify right side
   2,982.50x = 4,034,461.83
5. Step 5: Solve for x
   x = 4,034,461.83/2,982.50
6. Step 6: Final answer
   x = 1,352.71