Finding the Fourth Proportional to 813,917.34, 1,123,273.27 and 451,458.31

Step by Step Solution

1. Step 1: Write the proportion equation
   813,917.34 : 1,123,273.27 = 451,458.31 : x
2. Step 2: Convert to fraction form
   813,917.34/1,123,273.27 = 451,458.31/x
3. Step 3: Cross multiply
   813,917.34x = 1,123,273.27 × 451,458.31
4. Step 4: Simplify right side
   813,917.34x = 507,111,052,004.65
5. Step 5: Solve for x
   x = 507,111,052,004.65/813,917.34
6. Step 6: Final answer
   x = 623,049.82