Finding the Fourth Proportional to 2,986.89, 4,480.61 and 1,426.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,986.89 : 4,480.61 = 1,426.61 : x
2. Step 2: Convert to fraction form
   2,986.89/4,480.61 = 1,426.61/x
3. Step 3: Cross multiply
   2,986.89x = 4,480.61 × 1,426.61
4. Step 4: Simplify right side
   2,986.89x = 6,392,053.50
5. Step 5: Solve for x
   x = 6,392,053.50/2,986.89
6. Step 6: Final answer
   x = 2,140.04