Finding the Fourth Proportional to 851,620.43, 1,175,196.63 and 488,788.91

Step by Step Solution

1. Step 1: Write the proportion equation
   851,620.43 : 1,175,196.63 = 488,788.91 : x
2. Step 2: Convert to fraction form
   851,620.43/1,175,196.63 = 488,788.91/x
3. Step 3: Cross multiply
   851,620.43x = 1,175,196.63 × 488,788.91
4. Step 4: Simplify right side
   851,620.43x = 574,423,079,813.37
5. Step 5: Solve for x
   x = 574,423,079,813.37/851,620.43
6. Step 6: Final answer
   x = 674,505.99