Finding the Fourth Proportional to 2,196.96, 3,290.11 and 1,208.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.96 : 3,290.11 = 1,208.27 : x
2. Step 2: Convert to fraction form
   2,196.96/3,290.11 = 1,208.27/x
3. Step 3: Cross multiply
   2,196.96x = 3,290.11 × 1,208.27
4. Step 4: Simplify right side
   2,196.96x = 3,975,321.74
5. Step 5: Solve for x
   x = 3,975,321.74/2,196.96
6. Step 6: Final answer
   x = 1,809.46