Finding the Fourth Proportional to 2,078.62, 3,119.27 and 1,105.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.62 : 3,119.27 = 1,105.40 : x
2. Step 2: Convert to fraction form
   2,078.62/3,119.27 = 1,105.40/x
3. Step 3: Cross multiply
   2,078.62x = 3,119.27 × 1,105.40
4. Step 4: Simplify right side
   2,078.62x = 3,448,041.06
5. Step 5: Solve for x
   x = 3,448,041.06/2,078.62
6. Step 6: Final answer
   x = 1,658.81