Finding the Fourth Proportional to 2,078.80, 3,119.01 and 1,103.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.80 : 3,119.01 = 1,103.56 : x
2. Step 2: Convert to fraction form
   2,078.80/3,119.01 = 1,103.56/x
3. Step 3: Cross multiply
   2,078.80x = 3,119.01 × 1,103.56
4. Step 4: Simplify right side
   2,078.80x = 3,442,014.68
5. Step 5: Solve for x
   x = 3,442,014.68/2,078.80
6. Step 6: Final answer
   x = 1,655.77