Finding the Fourth Proportional to 2,196.18, 3,294.09 and 809.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.18 : 3,294.09 = 809.46 : x
2. Step 2: Convert to fraction form
   2,196.18/3,294.09 = 809.46/x
3. Step 3: Cross multiply
   2,196.18x = 3,294.09 × 809.46
4. Step 4: Simplify right side
   2,196.18x = 2,666,434.09
5. Step 5: Solve for x
   x = 2,666,434.09/2,196.18
6. Step 6: Final answer
   x = 1,214.12