Finding the Fourth Proportional to 2,196.86, 3,293.30 and 809.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.86 : 3,293.30 = 809.25 : x
2. Step 2: Convert to fraction form
   2,196.86/3,293.30 = 809.25/x
3. Step 3: Cross multiply
   2,196.86x = 3,293.30 × 809.25
4. Step 4: Simplify right side
   2,196.86x = 2,665,098.98
5. Step 5: Solve for x
   x = 2,665,098.98/2,196.86
6. Step 6: Final answer
   x = 1,213.14