Finding the Fourth Proportional to 2,196.32, 3,294.48 and 657.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.32 : 3,294.48 = 657.68 : x
2. Step 2: Convert to fraction form
   2,196.32/3,294.48 = 657.68/x
3. Step 3: Cross multiply
   2,196.32x = 3,294.48 × 657.68
4. Step 4: Simplify right side
   2,196.32x = 2,166,713.61
5. Step 5: Solve for x
   x = 2,166,713.61/2,196.32
6. Step 6: Final answer
   x = 986.52