Finding the Fourth Proportional to 1,044.88, 1,443.12 and 712.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,044.88 : 1,443.12 = 712.72 : x
2. Step 2: Convert to fraction form
   1,044.88/1,443.12 = 712.72/x
3. Step 3: Cross multiply
   1,044.88x = 1,443.12 × 712.72
4. Step 4: Simplify right side
   1,044.88x = 1,028,540.49
5. Step 5: Solve for x
   x = 1,028,540.49/1,044.88
6. Step 6: Final answer
   x = 984.36