Finding the Fourth Proportional to 858,543.28, 1,287,290.04 and 409,401.52

Step by Step Solution

1. Step 1: Write the proportion equation
   858,543.28 : 1,287,290.04 = 409,401.52 : x
2. Step 2: Convert to fraction form
   858,543.28/1,287,290.04 = 409,401.52/x
3. Step 3: Cross multiply
   858,543.28x = 1,287,290.04 × 409,401.52
4. Step 4: Simplify right side
   858,543.28x = 527,018,499,056.86
5. Step 5: Solve for x
   x = 527,018,499,056.86/858,543.28
6. Step 6: Final answer
   x = 613,851.99