Finding the Fourth Proportional to 2,113.88, 3,165.14 and 1,722.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,113.88 : 3,165.14 = 1,722.27 : x
2. Step 2: Convert to fraction form
   2,113.88/3,165.14 = 1,722.27/x
3. Step 3: Cross multiply
   2,113.88x = 3,165.14 × 1,722.27
4. Step 4: Simplify right side
   2,113.88x = 5,451,217.06
5. Step 5: Solve for x
   x = 5,451,217.06/2,113.88
6. Step 6: Final answer
   x = 2,578.78