Finding the Fourth Proportional to 2,200.67, 3,300.79 and 1,105.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,200.67 : 3,300.79 = 1,105.75 : x
2. Step 2: Convert to fraction form
   2,200.67/3,300.79 = 1,105.75/x
3. Step 3: Cross multiply
   2,200.67x = 3,300.79 × 1,105.75
4. Step 4: Simplify right side
   2,200.67x = 3,649,848.54
5. Step 5: Solve for x
   x = 3,649,848.54/2,200.67
6. Step 6: Final answer
   x = 1,658.52