Finding the Fourth Proportional to 2,008.56, 2,771.32 and 1,222.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,008.56 : 2,771.32 = 1,222.56 : x
2. Step 2: Convert to fraction form
   2,008.56/2,771.32 = 1,222.56/x
3. Step 3: Cross multiply
   2,008.56x = 2,771.32 × 1,222.56
4. Step 4: Simplify right side
   2,008.56x = 3,388,104.98
5. Step 5: Solve for x
   x = 3,388,104.98/2,008.56
6. Step 6: Final answer
   x = 1,686.83