Finding the Fourth Proportional to 3,759.96, 5,188.63 and 2,081.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,759.96 : 5,188.63 = 2,081.31 : x
2. Step 2: Convert to fraction form
   3,759.96/5,188.63 = 2,081.31/x
3. Step 3: Cross multiply
   3,759.96x = 5,188.63 × 2,081.31
4. Step 4: Simplify right side
   3,759.96x = 10,799,147.51
5. Step 5: Solve for x
   x = 10,799,147.51/3,759.96
6. Step 6: Final answer
   x = 2,872.14