Finding the Fourth Proportional to 3,759.78, 5,188.17 and 2,081.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,759.78 : 5,188.17 = 2,081.16 : x
2. Step 2: Convert to fraction form
   3,759.78/5,188.17 = 2,081.16/x
3. Step 3: Cross multiply
   3,759.78x = 5,188.17 × 2,081.16
4. Step 4: Simplify right side
   3,759.78x = 10,797,411.88
5. Step 5: Solve for x
   x = 10,797,411.88/3,759.78
6. Step 6: Final answer
   x = 2,871.82