Finding the Fourth Proportional to 1,350.31, 1,863.21 and 760.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,350.31 : 1,863.21 = 760.72 : x
2. Step 2: Convert to fraction form
   1,350.31/1,863.21 = 760.72/x
3. Step 3: Cross multiply
   1,350.31x = 1,863.21 × 760.72
4. Step 4: Simplify right side
   1,350.31x = 1,417,381.11
5. Step 5: Solve for x
   x = 1,417,381.11/1,350.31
6. Step 6: Final answer
   x = 1,049.67