Finding the Fourth Proportional to 2,501.97, 3,748.83 and 857.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,501.97 : 3,748.83 = 857.61 : x
2. Step 2: Convert to fraction form
   2,501.97/3,748.83 = 857.61/x
3. Step 3: Cross multiply
   2,501.97x = 3,748.83 × 857.61
4. Step 4: Simplify right side
   2,501.97x = 3,215,034.10
5. Step 5: Solve for x
   x = 3,215,034.10/2,501.97
6. Step 6: Final answer
   x = 1,285.00