Finding the Fourth Proportional to 2,315.26, 3,189.24 and 1,724.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,315.26 : 3,189.24 = 1,724.80 : x
2. Step 2: Convert to fraction form
   2,315.26/3,189.24 = 1,724.80/x
3. Step 3: Cross multiply
   2,315.26x = 3,189.24 × 1,724.80
4. Step 4: Simplify right side
   2,315.26x = 5,500,801.15
5. Step 5: Solve for x
   x = 5,500,801.15/2,315.26
6. Step 6: Final answer
   x = 2,375.89