Finding the Fourth Proportional to 2,205.62, 3,308.50 and 1,109.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,205.62 : 3,308.50 = 1,109.38 : x
2. Step 2: Convert to fraction form
   2,205.62/3,308.50 = 1,109.38/x
3. Step 3: Cross multiply
   2,205.62x = 3,308.50 × 1,109.38
4. Step 4: Simplify right side
   2,205.62x = 3,670,383.73
5. Step 5: Solve for x
   x = 3,670,383.73/2,205.62
6. Step 6: Final answer
   x = 1,664.11