Finding the Fourth Proportional to 2,873.56, 4,311.81 and 1,231.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,873.56 : 4,311.81 = 1,231.48 : x
2. Step 2: Convert to fraction form
   2,873.56/4,311.81 = 1,231.48/x
3. Step 3: Cross multiply
   2,873.56x = 4,311.81 × 1,231.48
4. Step 4: Simplify right side
   2,873.56x = 5,309,907.78
5. Step 5: Solve for x
   x = 5,309,907.78/2,873.56
6. Step 6: Final answer
   x = 1,847.85