Finding the Fourth Proportional to 2,007.96, 2,771.02 and 1,222.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.96 : 2,771.02 = 1,222.04 : x
2. Step 2: Convert to fraction form
   2,007.96/2,771.02 = 1,222.04/x
3. Step 3: Cross multiply
   2,007.96x = 2,771.02 × 1,222.04
4. Step 4: Simplify right side
   2,007.96x = 3,386,297.28
5. Step 5: Solve for x
   x = 3,386,297.28/2,007.96
6. Step 6: Final answer
   x = 1,686.44