Finding the Fourth Proportional to 1,350.34, 1,863.20 and 760.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,350.34 : 1,863.20 = 760.78 : x
2. Step 2: Convert to fraction form
   1,350.34/1,863.20 = 760.78/x
3. Step 3: Cross multiply
   1,350.34x = 1,863.20 × 760.78
4. Step 4: Simplify right side
   1,350.34x = 1,417,485.30
5. Step 5: Solve for x
   x = 1,417,485.30/1,350.34
6. Step 6: Final answer
   x = 1,049.72