Finding the Fourth Proportional to 1,105.30, 1,524.51 and 939.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.30 : 1,524.51 = 939.25 : x
2. Step 2: Convert to fraction form
   1,105.30/1,524.51 = 939.25/x
3. Step 3: Cross multiply
   1,105.30x = 1,524.51 × 939.25
4. Step 4: Simplify right side
   1,105.30x = 1,431,896.02
5. Step 5: Solve for x
   x = 1,431,896.02/1,105.30
6. Step 6: Final answer
   x = 1,295.48