Finding the Fourth Proportional to 587,020.29, 880,825.89 and 437,560.71

Step by Step Solution

1. Step 1: Write the proportion equation
   587,020.29 : 880,825.89 = 437,560.71 : x
2. Step 2: Convert to fraction form
   587,020.29/880,825.89 = 437,560.71/x
3. Step 3: Cross multiply
   587,020.29x = 880,825.89 × 437,560.71
4. Step 4: Simplify right side
   587,020.29x = 385,414,801,814.78
5. Step 5: Solve for x
   x = 385,414,801,814.78/587,020.29
6. Step 6: Final answer
   x = 656,561.30