Finding the Fourth Proportional to 2,196.58, 3,293.74 and 809.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.58 : 3,293.74 = 809.44 : x
2. Step 2: Convert to fraction form
   2,196.58/3,293.74 = 809.44/x
3. Step 3: Cross multiply
   2,196.58x = 3,293.74 × 809.44
4. Step 4: Simplify right side
   2,196.58x = 2,666,084.91
5. Step 5: Solve for x
   x = 2,666,084.91/2,196.58
6. Step 6: Final answer
   x = 1,213.74