Finding the Fourth Proportional to 2,057.30, 3,086.40 and 741.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.30 : 3,086.40 = 741.12 : x
2. Step 2: Convert to fraction form
   2,057.30/3,086.40 = 741.12/x
3. Step 3: Cross multiply
   2,057.30x = 3,086.40 × 741.12
4. Step 4: Simplify right side
   2,057.30x = 2,287,392.77
5. Step 5: Solve for x
   x = 2,287,392.77/2,057.30
6. Step 6: Final answer
   x = 1,111.84