Finding the Fourth Proportional to 870,671.72, 1,201,461.05 and 488,624.69

Step by Step Solution

1. Step 1: Write the proportion equation
   870,671.72 : 1,201,461.05 = 488,624.69 : x
2. Step 2: Convert to fraction form
   870,671.72/1,201,461.05 = 488,624.69/x
3. Step 3: Cross multiply
   870,671.72x = 1,201,461.05 × 488,624.69
4. Step 4: Simplify right side
   870,671.72x = 587,063,533,103.33
5. Step 5: Solve for x
   x = 587,063,533,103.33/870,671.72
6. Step 6: Final answer
   x = 674,265.08