Finding the Fourth Proportional to 2,078.58, 3,119.24 and 1,105.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.58 : 3,119.24 = 1,105.37 : x
2. Step 2: Convert to fraction form
   2,078.58/3,119.24 = 1,105.37/x
3. Step 3: Cross multiply
   2,078.58x = 3,119.24 × 1,105.37
4. Step 4: Simplify right side
   2,078.58x = 3,447,893.20
5. Step 5: Solve for x
   x = 3,447,893.20/2,078.58
6. Step 6: Final answer
   x = 1,658.77