Finding the Fourth Proportional to 2,066.56, 3,099.42 and 1,722.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.56 : 3,099.42 = 1,722.10 : x
2. Step 2: Convert to fraction form
   2,066.56/3,099.42 = 1,722.10/x
3. Step 3: Cross multiply
   2,066.56x = 3,099.42 × 1,722.10
4. Step 4: Simplify right side
   2,066.56x = 5,337,511.18
5. Step 5: Solve for x
   x = 5,337,511.18/2,066.56
6. Step 6: Final answer
   x = 2,582.80