Finding the Fourth Proportional to 3,414.54, 5,120.73 and 1,105.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,414.54 : 5,120.73 = 1,105.50 : x
2. Step 2: Convert to fraction form
   3,414.54/5,120.73 = 1,105.50/x
3. Step 3: Cross multiply
   3,414.54x = 5,120.73 × 1,105.50
4. Step 4: Simplify right side
   3,414.54x = 5,660,967.02
5. Step 5: Solve for x
   x = 5,660,967.02/3,414.54
6. Step 6: Final answer
   x = 1,657.90