Finding the Fourth Proportional to 1,100.52, 1,520.64 and 960.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.52 : 1,520.64 = 960.12 : x
2. Step 2: Convert to fraction form
   1,100.52/1,520.64 = 960.12/x
3. Step 3: Cross multiply
   1,100.52x = 1,520.64 × 960.12
4. Step 4: Simplify right side
   1,100.52x = 1,459,996.88
5. Step 5: Solve for x
   x = 1,459,996.88/1,100.52
6. Step 6: Final answer
   x = 1,326.64