Finding the Fourth Proportional to 2,196.27, 3,294.99 and 636.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.27 : 3,294.99 = 636.40 : x
2. Step 2: Convert to fraction form
   2,196.27/3,294.99 = 636.40/x
3. Step 3: Cross multiply
   2,196.27x = 3,294.99 × 636.40
4. Step 4: Simplify right side
   2,196.27x = 2,096,935.75
5. Step 5: Solve for x
   x = 2,096,935.75/2,196.27
6. Step 6: Final answer
   x = 954.77