Finding the Fourth Proportional to 2,160.72, 3,237.16 and 1,724.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,160.72 : 3,237.16 = 1,724.68 : x
2. Step 2: Convert to fraction form
   2,160.72/3,237.16 = 1,724.68/x
3. Step 3: Cross multiply
   2,160.72x = 3,237.16 × 1,724.68
4. Step 4: Simplify right side
   2,160.72x = 5,583,065.11
5. Step 5: Solve for x
   x = 5,583,065.11/2,160.72
6. Step 6: Final answer
   x = 2,583.89