Finding the Fourth Proportional to 2,086.27, 2,880.20 and 1,424.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.27 : 2,880.20 = 1,424.09 : x
2. Step 2: Convert to fraction form
   2,086.27/2,880.20 = 1,424.09/x
3. Step 3: Cross multiply
   2,086.27x = 2,880.20 × 1,424.09
4. Step 4: Simplify right side
   2,086.27x = 4,101,674.78
5. Step 5: Solve for x
   x = 4,101,674.78/2,086.27
6. Step 6: Final answer
   x = 1,966.03