Finding the Fourth Proportional to 2,679.18, 4,019.37 and 1,293.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,679.18 : 4,019.37 = 1,293.69 : x
2. Step 2: Convert to fraction form
   2,679.18/4,019.37 = 1,293.69/x
3. Step 3: Cross multiply
   2,679.18x = 4,019.37 × 1,293.69
4. Step 4: Simplify right side
   2,679.18x = 5,199,818.78
5. Step 5: Solve for x
   x = 5,199,818.78/2,679.18
6. Step 6: Final answer
   x = 1,940.82