Finding the Fourth Proportional to 813,864, 1,123,132.32 and 495,912

Step by Step Solution

1. Step 1: Write the proportion equation
   813,864 : 1,123,132.32 = 495,912 : x
2. Step 2: Convert to fraction form
   813,864/1,123,132.32 = 495,912/x
3. Step 3: Cross multiply
   813,864x = 1,123,132.32 × 495,912
4. Step 4: Simplify right side
   813,864x = 556,974,795,075.84
5. Step 5: Solve for x
   x = 556,974,795,075.84/813,864
6. Step 6: Final answer
   x = 684,358.56