Finding the Fourth Proportional to 2,078.64, 3,116.16 and 982.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.64 : 3,116.16 = 982.44 : x
2. Step 2: Convert to fraction form
   2,078.64/3,116.16 = 982.44/x
3. Step 3: Cross multiply
   2,078.64x = 3,116.16 × 982.44
4. Step 4: Simplify right side
   2,078.64x = 3,061,440.23
5. Step 5: Solve for x
   x = 3,061,440.23/2,078.64
6. Step 6: Final answer
   x = 1,472.81