Finding the Fourth Proportional to 3,819.79, 5,271.57 and 2,141.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,819.79 : 5,271.57 = 2,141.50 : x
2. Step 2: Convert to fraction form
   3,819.79/5,271.57 = 2,141.50/x
3. Step 3: Cross multiply
   3,819.79x = 5,271.57 × 2,141.50
4. Step 4: Simplify right side
   3,819.79x = 11,289,067.16
5. Step 5: Solve for x
   x = 11,289,067.16/3,819.79
6. Step 6: Final answer
   x = 2,955.42