Finding the Fourth Proportional to 2,680.61, 4,017.57 and 1,293.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,680.61 : 4,017.57 = 1,293.69 : x
2. Step 2: Convert to fraction form
   2,680.61/4,017.57 = 1,293.69/x
3. Step 3: Cross multiply
   2,680.61x = 4,017.57 × 1,293.69
4. Step 4: Simplify right side
   2,680.61x = 5,197,490.13
5. Step 5: Solve for x
   x = 5,197,490.13/2,680.61
6. Step 6: Final answer
   x = 1,938.92