Finding the Fourth Proportional to 813,830.69, 1,123,099.83 and 451,269.83

Step by Step Solution

1. Step 1: Write the proportion equation
   813,830.69 : 1,123,099.83 = 451,269.83 : x
2. Step 2: Convert to fraction form
   813,830.69/1,123,099.83 = 451,269.83/x
3. Step 3: Cross multiply
   813,830.69x = 1,123,099.83 × 451,269.83
4. Step 4: Simplify right side
   813,830.69x = 506,821,072,164.88
5. Step 5: Solve for x
   x = 506,821,072,164.88/813,830.69
6. Step 6: Final answer
   x = 622,759.84