Finding the Fourth Proportional to 887,662, 1,224,973.60 and 485,254

Step by Step Solution

1. Step 1: Write the proportion equation
   887,662 : 1,224,973.60 = 485,254 : x
2. Step 2: Convert to fraction form
   887,662/1,224,973.60 = 485,254/x
3. Step 3: Cross multiply
   887,662x = 1,224,973.60 × 485,254
4. Step 4: Simplify right side
   887,662x = 594,423,339,294.40
5. Step 5: Solve for x
   x = 594,423,339,294.40/887,662
6. Step 6: Final answer
   x = 669,650.54