Finding the Fourth Proportional to 2,076.58, 3,112.71 and 980.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,076.58 : 3,112.71 = 980.11 : x
2. Step 2: Convert to fraction form
   2,076.58/3,112.71 = 980.11/x
3. Step 3: Cross multiply
   2,076.58x = 3,112.71 × 980.11
4. Step 4: Simplify right side
   2,076.58x = 3,050,798.20
5. Step 5: Solve for x
   x = 3,050,798.20/2,076.58
6. Step 6: Final answer
   x = 1,469.15