Finding the Fourth Proportional to 898,981.98, 1,240,591.35 and 496,573.98

Step by Step Solution

1. Step 1: Write the proportion equation
   898,981.98 : 1,240,591.35 = 496,573.98 : x
2. Step 2: Convert to fraction form
   898,981.98/1,240,591.35 = 496,573.98/x
3. Step 3: Cross multiply
   898,981.98x = 1,240,591.35 × 496,573.98
4. Step 4: Simplify right side
   898,981.98x = 616,045,384,223.07
5. Step 5: Solve for x
   x = 616,045,384,223.07/898,981.98
6. Step 6: Final answer
   x = 685,270.00