Finding the Fourth Proportional to 2,057.92, 3,086.56 and 1,241.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.92 : 3,086.56 = 1,241.60 : x
2. Step 2: Convert to fraction form
   2,057.92/3,086.56 = 1,241.60/x
3. Step 3: Cross multiply
   2,057.92x = 3,086.56 × 1,241.60
4. Step 4: Simplify right side
   2,057.92x = 3,832,272.90
5. Step 5: Solve for x
   x = 3,832,272.90/2,057.92
6. Step 6: Final answer
   x = 1,862.21