Finding the Fourth Proportional to 1,046.40, 1,562.31 and 942.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,046.40 : 1,562.31 = 942.72 : x
2. Step 2: Convert to fraction form
   1,046.40/1,562.31 = 942.72/x
3. Step 3: Cross multiply
   1,046.40x = 1,562.31 × 942.72
4. Step 4: Simplify right side
   1,046.40x = 1,472,820.88
5. Step 5: Solve for x
   x = 1,472,820.88/1,046.40
6. Step 6: Final answer
   x = 1,407.51