Finding the Fourth Proportional to 2,087.62, 2,879.89 and 1,423.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.62 : 2,879.89 = 1,423.42 : x
2. Step 2: Convert to fraction form
   2,087.62/2,879.89 = 1,423.42/x
3. Step 3: Cross multiply
   2,087.62x = 2,879.89 × 1,423.42
4. Step 4: Simplify right side
   2,087.62x = 4,099,282.27
5. Step 5: Solve for x
   x = 4,099,282.27/2,087.62
6. Step 6: Final answer
   x = 1,963.62