Finding the Fourth Proportional to 3,411.39, 4,707.72 and 1,919.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,411.39 : 4,707.72 = 1,919.37 : x
2. Step 2: Convert to fraction form
   3,411.39/4,707.72 = 1,919.37/x
3. Step 3: Cross multiply
   3,411.39x = 4,707.72 × 1,919.37
4. Step 4: Simplify right side
   3,411.39x = 9,035,856.54
5. Step 5: Solve for x
   x = 9,035,856.54/3,411.39
6. Step 6: Final answer
   x = 2,648.73