Finding the Fourth Proportional to 3,960.82, 5,939.73 and 1,619.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,960.82 : 5,939.73 = 1,619.57 : x
2. Step 2: Convert to fraction form
   3,960.82/5,939.73 = 1,619.57/x
3. Step 3: Cross multiply
   3,960.82x = 5,939.73 × 1,619.57
4. Step 4: Simplify right side
   3,960.82x = 9,619,808.52
5. Step 5: Solve for x
   x = 9,619,808.52/3,960.82
6. Step 6: Final answer
   x = 2,428.74