Finding the Fourth Proportional to 2,057.96, 3,086.92 and 825.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.96 : 3,086.92 = 825.35 : x
2. Step 2: Convert to fraction form
   2,057.96/3,086.92 = 825.35/x
3. Step 3: Cross multiply
   2,057.96x = 3,086.92 × 825.35
4. Step 4: Simplify right side
   2,057.96x = 2,547,789.42
5. Step 5: Solve for x
   x = 2,547,789.42/2,057.96
6. Step 6: Final answer
   x = 1,238.02