Finding the Fourth Proportional to 1,168.49, 1,752.37 and 648.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,168.49 : 1,752.37 = 648.74 : x
2. Step 2: Convert to fraction form
   1,168.49/1,752.37 = 648.74/x
3. Step 3: Cross multiply
   1,168.49x = 1,752.37 × 648.74
4. Step 4: Simplify right side
   1,168.49x = 1,136,835.27
5. Step 5: Solve for x
   x = 1,136,835.27/1,168.49
6. Step 6: Final answer
   x = 972.91