Finding the Fourth Proportional to 2,208.89, 3,308.29 and 1,055.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,208.89 : 3,308.29 = 1,055.45 : x
2. Step 2: Convert to fraction form
   2,208.89/3,308.29 = 1,055.45/x
3. Step 3: Cross multiply
   2,208.89x = 3,308.29 × 1,055.45
4. Step 4: Simplify right side
   2,208.89x = 3,491,734.68
5. Step 5: Solve for x
   x = 3,491,734.68/2,208.89
6. Step 6: Final answer
   x = 1,580.76