Finding the Fourth Proportional to 2,220.57, 3,065.46 and 1,722.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,220.57 : 3,065.46 = 1,722.06 : x
2. Step 2: Convert to fraction form
   2,220.57/3,065.46 = 1,722.06/x
3. Step 3: Cross multiply
   2,220.57x = 3,065.46 × 1,722.06
4. Step 4: Simplify right side
   2,220.57x = 5,278,906.05
5. Step 5: Solve for x
   x = 5,278,906.05/2,220.57
6. Step 6: Final answer
   x = 2,377.28