Finding the Fourth Proportional to 2,086.43, 2,877.66 and 1,340.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.43 : 2,877.66 = 1,340.55 : x
2. Step 2: Convert to fraction form
   2,086.43/2,877.66 = 1,340.55/x
3. Step 3: Cross multiply
   2,086.43x = 2,877.66 × 1,340.55
4. Step 4: Simplify right side
   2,086.43x = 3,857,647.11
5. Step 5: Solve for x
   x = 3,857,647.11/2,086.43
6. Step 6: Final answer
   x = 1,848.93