Finding the Fourth Proportional to 1,112.78, 1,535.92 and 758.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.78 : 1,535.92 = 758.54 : x
2. Step 2: Convert to fraction form
   1,112.78/1,535.92 = 758.54/x
3. Step 3: Cross multiply
   1,112.78x = 1,535.92 × 758.54
4. Step 4: Simplify right side
   1,112.78x = 1,165,056.76
5. Step 5: Solve for x
   x = 1,165,056.76/1,112.78
6. Step 6: Final answer
   x = 1,046.98