Finding the Fourth Proportional to 3,411.43, 4,707.72 and 1,919.23

Step by Step Solution

1. Step 1: Write the proportion equation
   3,411.43 : 4,707.72 = 1,919.23 : x
2. Step 2: Convert to fraction form
   3,411.43/4,707.72 = 1,919.23/x
3. Step 3: Cross multiply
   3,411.43x = 4,707.72 × 1,919.23
4. Step 4: Simplify right side
   3,411.43x = 9,035,185.69
5. Step 5: Solve for x
   x = 9,035,185.69/3,411.43
6. Step 6: Final answer
   x = 2,648.51