Finding the Fourth Proportional to 3,759.89, 5,188.61 and 2,081.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,759.89 : 5,188.61 = 2,081.30 : x
2. Step 2: Convert to fraction form
   3,759.89/5,188.61 = 2,081.30/x
3. Step 3: Cross multiply
   3,759.89x = 5,188.61 × 2,081.30
4. Step 4: Simplify right side
   3,759.89x = 10,799,053.99
5. Step 5: Solve for x
   x = 10,799,053.99/3,759.89
6. Step 6: Final answer
   x = 2,872.17