Finding the Fourth Proportional to 2,501.32, 3,751 and 857.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,501.32 : 3,751 = 857.42 : x
2. Step 2: Convert to fraction form
   2,501.32/3,751 = 857.42/x
3. Step 3: Cross multiply
   2,501.32x = 3,751 × 857.42
4. Step 4: Simplify right side
   2,501.32x = 3,216,182.42
5. Step 5: Solve for x
   x = 3,216,182.42/2,501.32
6. Step 6: Final answer
   x = 1,285.79