Finding the Fourth Proportional to 2,077.56, 3,115.56 and 980.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.56 : 3,115.56 = 980.04 : x
2. Step 2: Convert to fraction form
   2,077.56/3,115.56 = 980.04/x
3. Step 3: Cross multiply
   2,077.56x = 3,115.56 × 980.04
4. Step 4: Simplify right side
   2,077.56x = 3,053,373.42
5. Step 5: Solve for x
   x = 3,053,373.42/2,077.56
6. Step 6: Final answer
   x = 1,469.69