Finding the Fourth Proportional to 3,780.62, 5,667.28 and 1,831.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,780.62 : 5,667.28 = 1,831.76 : x
2. Step 2: Convert to fraction form
   3,780.62/5,667.28 = 1,831.76/x
3. Step 3: Cross multiply
   3,780.62x = 5,667.28 × 1,831.76
4. Step 4: Simplify right side
   3,780.62x = 10,381,063.90
5. Step 5: Solve for x
   x = 10,381,063.90/3,780.62
6. Step 6: Final answer
   x = 2,745.87