Finding the Fourth Proportional to 1,152.43, 1,726.72 and 1,107.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.43 : 1,726.72 = 1,107.47 : x
2. Step 2: Convert to fraction form
   1,152.43/1,726.72 = 1,107.47/x
3. Step 3: Cross multiply
   1,152.43x = 1,726.72 × 1,107.47
4. Step 4: Simplify right side
   1,152.43x = 1,912,292.15
5. Step 5: Solve for x
   x = 1,912,292.15/1,152.43
6. Step 6: Final answer
   x = 1,659.36