Finding the Fourth Proportional to 1,168.27, 1,751.49 and 648.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,168.27 : 1,751.49 = 648.45 : x
2. Step 2: Convert to fraction form
   1,168.27/1,751.49 = 648.45/x
3. Step 3: Cross multiply
   1,168.27x = 1,751.49 × 648.45
4. Step 4: Simplify right side
   1,168.27x = 1,135,753.69
5. Step 5: Solve for x
   x = 1,135,753.69/1,168.27
6. Step 6: Final answer
   x = 972.17