Finding the Fourth Proportional to 2,678.73, 4,020.69 and 1,293.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,678.73 : 4,020.69 = 1,293.04 : x
2. Step 2: Convert to fraction form
   2,678.73/4,020.69 = 1,293.04/x
3. Step 3: Cross multiply
   2,678.73x = 4,020.69 × 1,293.04
4. Step 4: Simplify right side
   2,678.73x = 5,198,913.17
5. Step 5: Solve for x
   x = 5,198,913.17/2,678.73
6. Step 6: Final answer
   x = 1,940.81