Finding the Fourth Proportional to 2,339.15, 3,507.84 and 1,105.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,339.15 : 3,507.84 = 1,105.25 : x
2. Step 2: Convert to fraction form
   2,339.15/3,507.84 = 1,105.25/x
3. Step 3: Cross multiply
   2,339.15x = 3,507.84 × 1,105.25
4. Step 4: Simplify right side
   2,339.15x = 3,877,022.62
5. Step 5: Solve for x
   x = 3,877,022.62/2,339.15
6. Step 6: Final answer
   x = 1,657.45