Finding the Fourth Proportional to 887,690, 1,225,016.52 and 485,282

Step by Step Solution

1. Step 1: Write the proportion equation
   887,690 : 1,225,016.52 = 485,282 : x
2. Step 2: Convert to fraction form
   887,690/1,225,016.52 = 485,282/x
3. Step 3: Cross multiply
   887,690x = 1,225,016.52 × 485,282
4. Step 4: Simplify right side
   887,690x = 594,478,466,858.64
5. Step 5: Solve for x
   x = 594,478,466,858.64/887,690
6. Step 6: Final answer
   x = 669,691.52