Finding the Fourth Proportional to 1,049.88, 1,447.02 and 769.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,049.88 : 1,447.02 = 769.72 : x
2. Step 2: Convert to fraction form
   1,049.88/1,447.02 = 769.72/x
3. Step 3: Cross multiply
   1,049.88x = 1,447.02 × 769.72
4. Step 4: Simplify right side
   1,049.88x = 1,113,800.23
5. Step 5: Solve for x
   x = 1,113,800.23/1,049.88
6. Step 6: Final answer
   x = 1,060.88