Finding the Fourth Proportional to 3,910.80, 5,865.12 and 1,719

Step by Step Solution

1. Step 1: Write the proportion equation
   3,910.80 : 5,865.12 = 1,719 : x
2. Step 2: Convert to fraction form
   3,910.80/5,865.12 = 1,719/x
3. Step 3: Cross multiply
   3,910.80x = 5,865.12 × 1,719
4. Step 4: Simplify right side
   3,910.80x = 10,082,141.28
5. Step 5: Solve for x
   x = 10,082,141.28/3,910.80
6. Step 6: Final answer
   x = 2,578.03