Finding the Fourth Proportional to 2,016.50, 3,024.75 and 648.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.50 : 3,024.75 = 648.50 : x
2. Step 2: Convert to fraction form
   2,016.50/3,024.75 = 648.50/x
3. Step 3: Cross multiply
   2,016.50x = 3,024.75 × 648.50
4. Step 4: Simplify right side
   2,016.50x = 1,961,550.38
5. Step 5: Solve for x
   x = 1,961,550.38/2,016.50
6. Step 6: Final answer
   x = 972.75