Finding the Fourth Proportional to 2,078.30, 3,118.26 and 1,103.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.30 : 3,118.26 = 1,103.06 : x
2. Step 2: Convert to fraction form
   2,078.30/3,118.26 = 1,103.06/x
3. Step 3: Cross multiply
   2,078.30x = 3,118.26 × 1,103.06
4. Step 4: Simplify right side
   2,078.30x = 3,439,627.88
5. Step 5: Solve for x
   x = 3,439,627.88/2,078.30
6. Step 6: Final answer
   x = 1,655.02