Finding the Fourth Proportional to 2,057.81, 2,839.75 and 1,126.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.81 : 2,839.75 = 1,126.31 : x
2. Step 2: Convert to fraction form
   2,057.81/2,839.75 = 1,126.31/x
3. Step 3: Cross multiply
   2,057.81x = 2,839.75 × 1,126.31
4. Step 4: Simplify right side
   2,057.81x = 3,198,438.82
5. Step 5: Solve for x
   x = 3,198,438.82/2,057.81
6. Step 6: Final answer
   x = 1,554.29