Finding the Fourth Proportional to 2,078.72, 3,119 and 1,104.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.72 : 3,119 = 1,104.91 : x
2. Step 2: Convert to fraction form
   2,078.72/3,119 = 1,104.91/x
3. Step 3: Cross multiply
   2,078.72x = 3,119 × 1,104.91
4. Step 4: Simplify right side
   2,078.72x = 3,446,214.29
5. Step 5: Solve for x
   x = 3,446,214.29/2,078.72
6. Step 6: Final answer
   x = 1,657.85