Finding the Fourth Proportional to 2,439.87, 3,365.42 and 1,554.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,439.87 : 3,365.42 = 1,554.27 : x
2. Step 2: Convert to fraction form
   2,439.87/3,365.42 = 1,554.27/x
3. Step 3: Cross multiply
   2,439.87x = 3,365.42 × 1,554.27
4. Step 4: Simplify right side
   2,439.87x = 5,230,763.57
5. Step 5: Solve for x
   x = 5,230,763.57/2,439.87
6. Step 6: Final answer
   x = 2,143.87