Finding the Fourth Proportional to 2,196.50, 3,294.76 and 657.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.50 : 3,294.76 = 657.50 : x
2. Step 2: Convert to fraction form
   2,196.50/3,294.76 = 657.50/x
3. Step 3: Cross multiply
   2,196.50x = 3,294.76 × 657.50
4. Step 4: Simplify right side
   2,196.50x = 2,166,304.70
5. Step 5: Solve for x
   x = 2,166,304.70/2,196.50
6. Step 6: Final answer
   x = 986.25