Finding the Fourth Proportional to 1,143.99, 1,726.29 and 1,103.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,143.99 : 1,726.29 = 1,103.31 : x
2. Step 2: Convert to fraction form
   1,143.99/1,726.29 = 1,103.31/x
3. Step 3: Cross multiply
   1,143.99x = 1,726.29 × 1,103.31
4. Step 4: Simplify right side
   1,143.99x = 1,904,633.02
5. Step 5: Solve for x
   x = 1,904,633.02/1,143.99
6. Step 6: Final answer
   x = 1,664.90