Finding the Fourth Proportional to 2,196.72, 3,294.60 and 636.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.72 : 3,294.60 = 636.45 : x
2. Step 2: Convert to fraction form
   2,196.72/3,294.60 = 636.45/x
3. Step 3: Cross multiply
   2,196.72x = 3,294.60 × 636.45
4. Step 4: Simplify right side
   2,196.72x = 2,096,848.17
5. Step 5: Solve for x
   x = 2,096,848.17/2,196.72
6. Step 6: Final answer
   x = 954.54