Finding the Fourth Proportional to 2,150.96, 3,223.53 and 919.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.96 : 3,223.53 = 919.53 : x
2. Step 2: Convert to fraction form
   2,150.96/3,223.53 = 919.53/x
3. Step 3: Cross multiply
   2,150.96x = 3,223.53 × 919.53
4. Step 4: Simplify right side
   2,150.96x = 2,964,132.54
5. Step 5: Solve for x
   x = 2,964,132.54/2,150.96
6. Step 6: Final answer
   x = 1,378.05