Finding the Fourth Proportional to 2,205.73, 3,308.90 and 745.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,205.73 : 3,308.90 = 745.30 : x
2. Step 2: Convert to fraction form
   2,205.73/3,308.90 = 745.30/x
3. Step 3: Cross multiply
   2,205.73x = 3,308.90 × 745.30
4. Step 4: Simplify right side
   2,205.73x = 2,466,123.17
5. Step 5: Solve for x
   x = 2,466,123.17/2,205.73
6. Step 6: Final answer
   x = 1,118.05