Finding the Fourth Proportional to 1,168.52, 1,751.85 and 648.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,168.52 : 1,751.85 = 648.70 : x
2. Step 2: Convert to fraction form
   1,168.52/1,751.85 = 648.70/x
3. Step 3: Cross multiply
   1,168.52x = 1,751.85 × 648.70
4. Step 4: Simplify right side
   1,168.52x = 1,136,420.72
5. Step 5: Solve for x
   x = 1,136,420.72/1,168.52
6. Step 6: Final answer
   x = 972.53