Finding the Fourth Proportional to 3,781.92, 5,667.68 and 2,856.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,781.92 : 5,667.68 = 2,856.72 : x
2. Step 2: Convert to fraction form
   3,781.92/5,667.68 = 2,856.72/x
3. Step 3: Cross multiply
   3,781.92x = 5,667.68 × 2,856.72
4. Step 4: Simplify right side
   3,781.92x = 16,190,974.81
5. Step 5: Solve for x
   x = 16,190,974.81/3,781.92
6. Step 6: Final answer
   x = 4,281.15