Finding the Fourth Proportional to 712,156.89, 982,788.72 and 440,217.81

Step by Step Solution

1. Step 1: Write the proportion equation
   712,156.89 : 982,788.72 = 440,217.81 : x
2. Step 2: Convert to fraction form
   712,156.89/982,788.72 = 440,217.81/x
3. Step 3: Cross multiply
   712,156.89x = 982,788.72 × 440,217.81
4. Step 4: Simplify right side
   712,156.89x = 432,641,098,011.10
5. Step 5: Solve for x
   x = 432,641,098,011.10/712,156.89
6. Step 6: Final answer
   x = 607,508.13