Finding the Fourth Proportional to 2,711.31, 4,065.56 and 1,722.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,711.31 : 4,065.56 = 1,722.39 : x
2. Step 2: Convert to fraction form
   2,711.31/4,065.56 = 1,722.39/x
3. Step 3: Cross multiply
   2,711.31x = 4,065.56 × 1,722.39
4. Step 4: Simplify right side
   2,711.31x = 7,002,479.89
5. Step 5: Solve for x
   x = 7,002,479.89/2,711.31
6. Step 6: Final answer
   x = 2,582.69