Finding the Fourth Proportional to 2,463.72, 3,693.12 and 902.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,463.72 : 3,693.12 = 902.40 : x
2. Step 2: Convert to fraction form
   2,463.72/3,693.12 = 902.40/x
3. Step 3: Cross multiply
   2,463.72x = 3,693.12 × 902.40
4. Step 4: Simplify right side
   2,463.72x = 3,332,671.49
5. Step 5: Solve for x
   x = 3,332,671.49/2,463.72
6. Step 6: Final answer
   x = 1,352.70