Finding the Fourth Proportional to 1,123.15, 1,549.98 and 791.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.15 : 1,549.98 = 791.68 : x
2. Step 2: Convert to fraction form
   1,123.15/1,549.98 = 791.68/x
3. Step 3: Cross multiply
   1,123.15x = 1,549.98 × 791.68
4. Step 4: Simplify right side
   1,123.15x = 1,227,088.17
5. Step 5: Solve for x
   x = 1,227,088.17/1,123.15
6. Step 6: Final answer
   x = 1,092.54