Finding the Fourth Proportional to 1,983.28, 2,737.31 and 1,143.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,983.28 : 2,737.31 = 1,143.96 : x
2. Step 2: Convert to fraction form
   1,983.28/2,737.31 = 1,143.96/x
3. Step 3: Cross multiply
   1,983.28x = 2,737.31 × 1,143.96
4. Step 4: Simplify right side
   1,983.28x = 3,131,373.15
5. Step 5: Solve for x
   x = 3,131,373.15/1,983.28
6. Step 6: Final answer
   x = 1,578.89