Finding the Fourth Proportional to 1,111.44, 1,531.04 and 945.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.44 : 1,531.04 = 945.12 : x
2. Step 2: Convert to fraction form
   1,111.44/1,531.04 = 945.12/x
3. Step 3: Cross multiply
   1,111.44x = 1,531.04 × 945.12
4. Step 4: Simplify right side
   1,111.44x = 1,447,016.52
5. Step 5: Solve for x
   x = 1,447,016.52/1,111.44
6. Step 6: Final answer
   x = 1,301.93