Finding the Fourth Proportional to 2,388.72, 3,294.36 and 1,724.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388.72 : 3,294.36 = 1,724.52 : x
2. Step 2: Convert to fraction form
   2,388.72/3,294.36 = 1,724.52/x
3. Step 3: Cross multiply
   2,388.72x = 3,294.36 × 1,724.52
4. Step 4: Simplify right side
   2,388.72x = 5,681,189.71
5. Step 5: Solve for x
   x = 5,681,189.71/2,388.72
6. Step 6: Final answer
   x = 2,378.34