Finding the Fourth Proportional to 2,196.77, 3,294.88 and 553.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.77 : 3,294.88 = 553.18 : x
2. Step 2: Convert to fraction form
   2,196.77/3,294.88 = 553.18/x
3. Step 3: Cross multiply
   2,196.77x = 3,294.88 × 553.18
4. Step 4: Simplify right side
   2,196.77x = 1,822,645.24
5. Step 5: Solve for x
   x = 1,822,645.24/2,196.77
6. Step 6: Final answer
   x = 829.70