Finding the Fourth Proportional to 2,641.92, 3,960.96 and 1,487.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.92 : 3,960.96 = 1,487.04 : x
2. Step 2: Convert to fraction form
   2,641.92/3,960.96 = 1,487.04/x
3. Step 3: Cross multiply
   2,641.92x = 3,960.96 × 1,487.04
4. Step 4: Simplify right side
   2,641.92x = 5,890,105.96
5. Step 5: Solve for x
   x = 5,890,105.96/2,641.92
6. Step 6: Final answer
   x = 2,229.48