Finding the Fourth Proportional to 2,678.75, 4,018.72 and 1,293.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,678.75 : 4,018.72 = 1,293.25 : x
2. Step 2: Convert to fraction form
   2,678.75/4,018.72 = 1,293.25/x
3. Step 3: Cross multiply
   2,678.75x = 4,018.72 × 1,293.25
4. Step 4: Simplify right side
   2,678.75x = 5,197,209.64
5. Step 5: Solve for x
   x = 5,197,209.64/2,678.75
6. Step 6: Final answer
   x = 1,940.16