Finding the Fourth Proportional to 857,074.71, 1,182,772.71 and 489,600.50

Step by Step Solution

1. Step 1: Write the proportion equation
   857,074.71 : 1,182,772.71 = 489,600.50 : x
2. Step 2: Convert to fraction form
   857,074.71/1,182,772.71 = 489,600.50/x
3. Step 3: Cross multiply
   857,074.71x = 1,182,772.71 × 489,600.50
4. Step 4: Simplify right side
   857,074.71x = 579,086,104,288.49
5. Step 5: Solve for x
   x = 579,086,104,288.49/857,074.71
6. Step 6: Final answer
   x = 675,654.17