Finding the Fourth Proportional to 2,057.84, 3,086.82 and 759

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.84 : 3,086.82 = 759 : x
2. Step 2: Convert to fraction form
   2,057.84/3,086.82 = 759/x
3. Step 3: Cross multiply
   2,057.84x = 3,086.82 × 759
4. Step 4: Simplify right side
   2,057.84x = 2,342,896.38
5. Step 5: Solve for x
   x = 2,342,896.38/2,057.84
6. Step 6: Final answer
   x = 1,138.52