Finding the Fourth Proportional to 3,831.34, 5,744.50 and 1,856.45

Step by Step Solution

1. Step 1: Write the proportion equation
   3,831.34 : 5,744.50 = 1,856.45 : x
2. Step 2: Convert to fraction form
   3,831.34/5,744.50 = 1,856.45/x
3. Step 3: Cross multiply
   3,831.34x = 5,744.50 × 1,856.45
4. Step 4: Simplify right side
   3,831.34x = 10,664,377.03
5. Step 5: Solve for x
   x = 10,664,377.03/3,831.34
6. Step 6: Final answer
   x = 2,783.46