Finding the Fourth Proportional to 2,196.59, 3,294.86 and 657.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.59 : 3,294.86 = 657.59 : x
2. Step 2: Convert to fraction form
   2,196.59/3,294.86 = 657.59/x
3. Step 3: Cross multiply
   2,196.59x = 3,294.86 × 657.59
4. Step 4: Simplify right side
   2,196.59x = 2,166,647.23
5. Step 5: Solve for x
   x = 2,166,647.23/2,196.59
6. Step 6: Final answer
   x = 986.37