Finding the Fourth Proportional to 1,104.72, 1,521.54 and 937.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,104.72 : 1,521.54 = 937.92 : x
2. Step 2: Convert to fraction form
   1,104.72/1,521.54 = 937.92/x
3. Step 3: Cross multiply
   1,104.72x = 1,521.54 × 937.92
4. Step 4: Simplify right side
   1,104.72x = 1,427,082.80
5. Step 5: Solve for x
   x = 1,427,082.80/1,104.72
6. Step 6: Final answer
   x = 1,291.80