Finding the Fourth Proportional to 2,109.92, 2,910.32 and 1,323.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.92 : 2,910.32 = 1,323.28 : x
2. Step 2: Convert to fraction form
   2,109.92/2,910.32 = 1,323.28/x
3. Step 3: Cross multiply
   2,109.92x = 2,910.32 × 1,323.28
4. Step 4: Simplify right side
   2,109.92x = 3,851,168.25
5. Step 5: Solve for x
   x = 3,851,168.25/2,109.92
6. Step 6: Final answer
   x = 1,825.27