Finding the Fourth Proportional to 2,481.31, 3,723.84 and 1,311.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,481.31 : 3,723.84 = 1,311.15 : x
2. Step 2: Convert to fraction form
   2,481.31/3,723.84 = 1,311.15/x
3. Step 3: Cross multiply
   2,481.31x = 3,723.84 × 1,311.15
4. Step 4: Simplify right side
   2,481.31x = 4,882,512.82
5. Step 5: Solve for x
   x = 4,882,512.82/2,481.31
6. Step 6: Final answer
   x = 1,967.72