Finding the Fourth Proportional to 2,485.86, 3,724.47 and 1,329.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.86 : 3,724.47 = 1,329.54 : x
2. Step 2: Convert to fraction form
   2,485.86/3,724.47 = 1,329.54/x
3. Step 3: Cross multiply
   2,485.86x = 3,724.47 × 1,329.54
4. Step 4: Simplify right side
   2,485.86x = 4,951,831.84
5. Step 5: Solve for x
   x = 4,951,831.84/2,485.86
6. Step 6: Final answer
   x = 1,992.00