Finding the Fourth Proportional to 712,061.57, 982,645.28 and 389,773.50

Step by Step Solution

1. Step 1: Write the proportion equation
   712,061.57 : 982,645.28 = 389,773.50 : x
2. Step 2: Convert to fraction form
   712,061.57/982,645.28 = 389,773.50/x
3. Step 3: Cross multiply
   712,061.57x = 982,645.28 × 389,773.50
4. Step 4: Simplify right side
   712,061.57x = 383,009,088,095.21
5. Step 5: Solve for x
   x = 383,009,088,095.21/712,061.57
6. Step 6: Final answer
   x = 537,887.60