Finding the Fourth Proportional to 835,123.20, 1,152,466.56 and 495,870.72

Step by Step Solution

1. Step 1: Write the proportion equation
   835,123.20 : 1,152,466.56 = 495,870.72 : x
2. Step 2: Convert to fraction form
   835,123.20/1,152,466.56 = 495,870.72/x
3. Step 3: Cross multiply
   835,123.20x = 1,152,466.56 × 495,870.72
4. Step 4: Simplify right side
   835,123.20x = 571,474,422,883.12
5. Step 5: Solve for x
   x = 571,474,422,883.12/835,123.20
6. Step 6: Final answer
   x = 684,299.54