Finding the Fourth Proportional to 764,545.98, 1,055,100.51 and 420,408.03

Step by Step Solution

1. Step 1: Write the proportion equation
   764,545.98 : 1,055,100.51 = 420,408.03 : x
2. Step 2: Convert to fraction form
   764,545.98/1,055,100.51 = 420,408.03/x
3. Step 3: Cross multiply
   764,545.98x = 1,055,100.51 × 420,408.03
4. Step 4: Simplify right side
   764,545.98x = 443,572,726,861.10
5. Step 5: Solve for x
   x = 443,572,726,861.10/764,545.98
6. Step 6: Final answer
   x = 580,177.96