Finding the Fourth Proportional to 3,571.42, 5,359.34 and 1,722.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,571.42 : 5,359.34 = 1,722.72 : x
2. Step 2: Convert to fraction form
   3,571.42/5,359.34 = 1,722.72/x
3. Step 3: Cross multiply
   3,571.42x = 5,359.34 × 1,722.72
4. Step 4: Simplify right side
   3,571.42x = 9,232,642.20
5. Step 5: Solve for x
   x = 9,232,642.20/3,571.42
6. Step 6: Final answer
   x = 2,585.15