Finding the Fourth Proportional to 1,124,081.31, 1,551,193.77 and 640,802.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,124,081.31 : 1,551,193.77 = 640,802.10 : x
2. Step 2: Convert to fraction form
   1,124,081.31/1,551,193.77 = 640,802.10/x
3. Step 3: Cross multiply
   1,124,081.31x = 1,551,193.77 × 640,802.10
4. Step 4: Simplify right side
   1,124,081.31x = 994,008,225,322.92
5. Step 5: Solve for x
   x = 994,008,225,322.92/1,124,081.31
6. Step 6: Final answer
   x = 884,284.99