Finding the Fourth Proportional to 1,123.12, 1,549.32 and 749.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.12 : 1,549.32 = 749.68 : x
2. Step 2: Convert to fraction form
   1,123.12/1,549.32 = 749.68/x
3. Step 3: Cross multiply
   1,123.12x = 1,549.32 × 749.68
4. Step 4: Simplify right side
   1,123.12x = 1,161,494.22
5. Step 5: Solve for x
   x = 1,161,494.22/1,123.12
6. Step 6: Final answer
   x = 1,034.17