Finding the Fourth Proportional to 2,076.30, 3,115.14 and 980.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,076.30 : 3,115.14 = 980.98 : x
2. Step 2: Convert to fraction form
   2,076.30/3,115.14 = 980.98/x
3. Step 3: Cross multiply
   2,076.30x = 3,115.14 × 980.98
4. Step 4: Simplify right side
   2,076.30x = 3,055,884.09
5. Step 5: Solve for x
   x = 3,055,884.09/2,076.30
6. Step 6: Final answer
   x = 1,471.79