Finding the Fourth Proportional to 2,196.19, 3,294.21 and 636.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.19 : 3,294.21 = 636.23 : x
2. Step 2: Convert to fraction form
   2,196.19/3,294.21 = 636.23/x
3. Step 3: Cross multiply
   2,196.19x = 3,294.21 × 636.23
4. Step 4: Simplify right side
   2,196.19x = 2,095,883.46
5. Step 5: Solve for x
   x = 2,095,883.46/2,196.19
6. Step 6: Final answer
   x = 954.33