Finding the Fourth Proportional to 2,082.09, 3,122.52 and 986.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,082.09 : 3,122.52 = 986.16 : x
2. Step 2: Convert to fraction form
   2,082.09/3,122.52 = 986.16/x
3. Step 3: Cross multiply
   2,082.09x = 3,122.52 × 986.16
4. Step 4: Simplify right side
   2,082.09x = 3,079,304.32
5. Step 5: Solve for x
   x = 3,079,304.32/2,082.09
6. Step 6: Final answer
   x = 1,478.95