Finding the Fourth Proportional to 2,196.71, 3,294.57 and 636.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.71 : 3,294.57 = 636.36 : x
2. Step 2: Convert to fraction form
   2,196.71/3,294.57 = 636.36/x
3. Step 3: Cross multiply
   2,196.71x = 3,294.57 × 636.36
4. Step 4: Simplify right side
   2,196.71x = 2,096,532.57
5. Step 5: Solve for x
   x = 2,096,532.57/2,196.71
6. Step 6: Final answer
   x = 954.40