Finding the Fourth Proportional to 813,892.50, 1,123,171.65 and 456,196.50

Step by Step Solution

1. Step 1: Write the proportion equation
   813,892.50 : 1,123,171.65 = 456,196.50 : x
2. Step 2: Convert to fraction form
   813,892.50/1,123,171.65 = 456,196.50/x
3. Step 3: Cross multiply
   813,892.50x = 1,123,171.65 × 456,196.50
4. Step 4: Simplify right side
   813,892.50x = 512,386,975,629.23
5. Step 5: Solve for x
   x = 512,386,975,629.23/813,892.50
6. Step 6: Final answer
   x = 629,551.17