Finding the Fourth Proportional to 2,439.48, 3,367.23 and 2,111.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,439.48 : 3,367.23 = 2,111.43 : x
2. Step 2: Convert to fraction form
   2,439.48/3,367.23 = 2,111.43/x
3. Step 3: Cross multiply
   2,439.48x = 3,367.23 × 2,111.43
4. Step 4: Simplify right side
   2,439.48x = 7,109,670.44
5. Step 5: Solve for x
   x = 7,109,670.44/2,439.48
6. Step 6: Final answer
   x = 2,914.42