Finding the Fourth Proportional to 2,339.76, 3,509.46 and 1,105.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,339.76 : 3,509.46 = 1,105.32 : x
2. Step 2: Convert to fraction form
   2,339.76/3,509.46 = 1,105.32/x
3. Step 3: Cross multiply
   2,339.76x = 3,509.46 × 1,105.32
4. Step 4: Simplify right side
   2,339.76x = 3,879,076.33
5. Step 5: Solve for x
   x = 3,879,076.33/2,339.76
6. Step 6: Final answer
   x = 1,657.89