Finding the Fourth Proportional to 1,104.72, 1,649.20 and 958.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,104.72 : 1,649.20 = 958.96 : x
2. Step 2: Convert to fraction form
   1,104.72/1,649.20 = 958.96/x
3. Step 3: Cross multiply
   1,104.72x = 1,649.20 × 958.96
4. Step 4: Simplify right side
   1,104.72x = 1,581,516.83
5. Step 5: Solve for x
   x = 1,581,516.83/1,104.72
6. Step 6: Final answer
   x = 1,431.60