Finding the Fourth Proportional to 2,076.42, 3,115.12 and 980.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,076.42 : 3,115.12 = 980.22 : x
2. Step 2: Convert to fraction form
   2,076.42/3,115.12 = 980.22/x
3. Step 3: Cross multiply
   2,076.42x = 3,115.12 × 980.22
4. Step 4: Simplify right side
   2,076.42x = 3,053,502.93
5. Step 5: Solve for x
   x = 3,053,502.93/2,076.42
6. Step 6: Final answer
   x = 1,470.56