Finding the Fourth Proportional to 783,387.50, 1,081,081.59 and 425,691.50

Step by Step Solution

1. Step 1: Write the proportion equation
   783,387.50 : 1,081,081.59 = 425,691.50 : x
2. Step 2: Convert to fraction form
   783,387.50/1,081,081.59 = 425,691.50/x
3. Step 3: Cross multiply
   783,387.50x = 1,081,081.59 × 425,691.50
4. Step 4: Simplify right side
   783,387.50x = 460,207,243,669.49
5. Step 5: Solve for x
   x = 460,207,243,669.49/783,387.50
6. Step 6: Final answer
   x = 587,457.99