Finding the Fourth Proportional to 814,390.55, 1,123,993.86 and 451,930.83

Step by Step Solution

1. Step 1: Write the proportion equation
   814,390.55 : 1,123,993.86 = 451,930.83 : x
2. Step 2: Convert to fraction form
   814,390.55/1,123,993.86 = 451,930.83/x
3. Step 3: Cross multiply
   814,390.55x = 1,123,993.86 × 451,930.83
4. Step 4: Simplify right side
   814,390.55x = 507,967,475,805.05
5. Step 5: Solve for x
   x = 507,967,475,805.05/814,390.55
6. Step 6: Final answer
   x = 623,739.41