Finding the Fourth Proportional to 888,128.82, 1,225,616.91 and 480,229.69

Step by Step Solution

1. Step 1: Write the proportion equation
   888,128.82 : 1,225,616.91 = 480,229.69 : x
2. Step 2: Convert to fraction form
   888,128.82/1,225,616.91 = 480,229.69/x
3. Step 3: Cross multiply
   888,128.82x = 1,225,616.91 × 480,229.69
4. Step 4: Simplify right side
   888,128.82x = 588,577,620,218.83
5. Step 5: Solve for x
   x = 588,577,620,218.83/888,128.82
6. Step 6: Final answer
   x = 662,716.50