Finding the Fourth Proportional to 2,196.55, 3,294.78 and 553.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.55 : 3,294.78 = 553.11 : x
2. Step 2: Convert to fraction form
   2,196.55/3,294.78 = 553.11/x
3. Step 3: Cross multiply
   2,196.55x = 3,294.78 × 553.11
4. Step 4: Simplify right side
   2,196.55x = 1,822,375.77
5. Step 5: Solve for x
   x = 1,822,375.77/2,196.55
6. Step 6: Final answer
   x = 829.65