Finding the Fourth Proportional to 2,481.12, 3,719.52 and 1,386

Step by Step Solution

1. Step 1: Write the proportion equation
   2,481.12 : 3,719.52 = 1,386 : x
2. Step 2: Convert to fraction form
   2,481.12/3,719.52 = 1,386/x
3. Step 3: Cross multiply
   2,481.12x = 3,719.52 × 1,386
4. Step 4: Simplify right side
   2,481.12x = 5,155,254.72
5. Step 5: Solve for x
   x = 5,155,254.72/2,481.12
6. Step 6: Final answer
   x = 2,077.79