Finding the Fourth Proportional to 2,057.91, 3,087.32 and 759.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.91 : 3,087.32 = 759.38 : x
2. Step 2: Convert to fraction form
   2,057.91/3,087.32 = 759.38/x
3. Step 3: Cross multiply
   2,057.91x = 3,087.32 × 759.38
4. Step 4: Simplify right side
   2,057.91x = 2,344,429.83
5. Step 5: Solve for x
   x = 2,344,429.83/2,057.91
6. Step 6: Final answer
   x = 1,139.23