Finding the Fourth Proportional to 2,073.97, 3,111.04 and 687.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,073.97 : 3,111.04 = 687.43 : x
2. Step 2: Convert to fraction form
   2,073.97/3,111.04 = 687.43/x
3. Step 3: Cross multiply
   2,073.97x = 3,111.04 × 687.43
4. Step 4: Simplify right side
   2,073.97x = 2,138,606.67
5. Step 5: Solve for x
   x = 2,138,606.67/2,073.97
6. Step 6: Final answer
   x = 1,031.17