Finding the Fourth Proportional to 3,432.72, 5,149.92 and 1,124.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,432.72 : 5,149.92 = 1,124.16 : x
2. Step 2: Convert to fraction form
   3,432.72/5,149.92 = 1,124.16/x
3. Step 3: Cross multiply
   3,432.72x = 5,149.92 × 1,124.16
4. Step 4: Simplify right side
   3,432.72x = 5,789,334.07
5. Step 5: Solve for x
   x = 5,789,334.07/3,432.72
6. Step 6: Final answer
   x = 1,686.52