Finding the Fourth Proportional to 2,501.35, 3,752.06 and 857.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,501.35 : 3,752.06 = 857.86 : x
2. Step 2: Convert to fraction form
   2,501.35/3,752.06 = 857.86/x
3. Step 3: Cross multiply
   2,501.35x = 3,752.06 × 857.86
4. Step 4: Simplify right side
   2,501.35x = 3,218,728.52
5. Step 5: Solve for x
   x = 3,218,728.52/2,501.35
6. Step 6: Final answer
   x = 1,286.80