Finding the Fourth Proportional to 2,196.38, 3,294.57 and 636.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.38 : 3,294.57 = 636.47 : x
2. Step 2: Convert to fraction form
   2,196.38/3,294.57 = 636.47/x
3. Step 3: Cross multiply
   2,196.38x = 3,294.57 × 636.47
4. Step 4: Simplify right side
   2,196.38x = 2,096,878.50
5. Step 5: Solve for x
   x = 2,096,878.50/2,196.38
6. Step 6: Final answer
   x = 954.70