Finding the Fourth Proportional to 2,196.63, 3,295.12 and 636.66

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.63 : 3,295.12 = 636.66 : x
2. Step 2: Convert to fraction form
   2,196.63/3,295.12 = 636.66/x
3. Step 3: Cross multiply
   2,196.63x = 3,295.12 × 636.66
4. Step 4: Simplify right side
   2,196.63x = 2,097,871.10
5. Step 5: Solve for x
   x = 2,097,871.10/2,196.63
6. Step 6: Final answer
   x = 955.04