Finding the Fourth Proportional to 2,151.83, 3,227.91 and 919.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.83 : 3,227.91 = 919.25 : x
2. Step 2: Convert to fraction form
   2,151.83/3,227.91 = 919.25/x
3. Step 3: Cross multiply
   2,151.83x = 3,227.91 × 919.25
4. Step 4: Simplify right side
   2,151.83x = 2,967,256.27
5. Step 5: Solve for x
   x = 2,967,256.27/2,151.83
6. Step 6: Final answer
   x = 1,378.95