Finding the Fourth Proportional to 2,722.55, 4,066.56 and 2,173.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,722.55 : 4,066.56 = 2,173.10 : x
2. Step 2: Convert to fraction form
   2,722.55/4,066.56 = 2,173.10/x
3. Step 3: Cross multiply
   2,722.55x = 4,066.56 × 2,173.10
4. Step 4: Simplify right side
   2,722.55x = 8,837,021.20
5. Step 5: Solve for x
   x = 8,837,021.20/2,722.55
6. Step 6: Final answer
   x = 3,245.87