Finding the Fourth Proportional to 769,789.55, 1,062,266.72 and 425,605.56

Step by Step Solution

1. Step 1: Write the proportion equation
   769,789.55 : 1,062,266.72 = 425,605.56 : x
2. Step 2: Convert to fraction form
   769,789.55/1,062,266.72 = 425,605.56/x
3. Step 3: Cross multiply
   769,789.55x = 1,062,266.72 × 425,605.56
4. Step 4: Simplify right side
   769,789.55x = 452,106,622,234.96
5. Step 5: Solve for x
   x = 452,106,622,234.96/769,789.55
6. Step 6: Final answer
   x = 587,311.98