Finding the Fourth Proportional to 2,206.89, 3,308.04 and 745.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,206.89 : 3,308.04 = 745.79 : x
2. Step 2: Convert to fraction form
   2,206.89/3,308.04 = 745.79/x
3. Step 3: Cross multiply
   2,206.89x = 3,308.04 × 745.79
4. Step 4: Simplify right side
   2,206.89x = 2,467,086.61
5. Step 5: Solve for x
   x = 2,467,086.61/2,206.89
6. Step 6: Final answer
   x = 1,117.90