Finding the Fourth Proportional to 2,078.96, 3,114.60 and 980.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.96 : 3,114.60 = 980.96 : x
2. Step 2: Convert to fraction form
   2,078.96/3,114.60 = 980.96/x
3. Step 3: Cross multiply
   2,078.96x = 3,114.60 × 980.96
4. Step 4: Simplify right side
   2,078.96x = 3,055,298.02
5. Step 5: Solve for x
   x = 3,055,298.02/2,078.96
6. Step 6: Final answer
   x = 1,469.63