Finding the Fourth Proportional to 898,371.01, 1,238,274.61 and 636,813.91

Step by Step Solution

1. Step 1: Write the proportion equation
   898,371.01 : 1,238,274.61 = 636,813.91 : x
2. Step 2: Convert to fraction form
   898,371.01/1,238,274.61 = 636,813.91/x
3. Step 3: Cross multiply
   898,371.01x = 1,238,274.61 × 636,813.91
4. Step 4: Simplify right side
   898,371.01x = 788,550,496,047.83
5. Step 5: Solve for x
   x = 788,550,496,047.83/898,371.01
6. Step 6: Final answer
   x = 877,755.95