Finding the Fourth Proportional to 1,724.48, 2,572.37 and 1,558.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,724.48 : 2,572.37 = 1,558.40 : x
2. Step 2: Convert to fraction form
   1,724.48/2,572.37 = 1,558.40/x
3. Step 3: Cross multiply
   1,724.48x = 2,572.37 × 1,558.40
4. Step 4: Simplify right side
   1,724.48x = 4,008,766.60
5. Step 5: Solve for x
   x = 4,008,766.60/1,724.48
6. Step 6: Final answer
   x = 2,324.63