Finding the Fourth Proportional to 2,196.70, 3,294.53 and 636.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.70 : 3,294.53 = 636.29 : x
2. Step 2: Convert to fraction form
   2,196.70/3,294.53 = 636.29/x
3. Step 3: Cross multiply
   2,196.70x = 3,294.53 × 636.29
4. Step 4: Simplify right side
   2,196.70x = 2,096,276.49
5. Step 5: Solve for x
   x = 2,096,276.49/2,196.70
6. Step 6: Final answer
   x = 954.28