Finding the Fourth Proportional to 2,383.92, 3,289.86 and 1,321.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,383.92 : 3,289.86 = 1,321.79 : x
2. Step 2: Convert to fraction form
   2,383.92/3,289.86 = 1,321.79/x
3. Step 3: Cross multiply
   2,383.92x = 3,289.86 × 1,321.79
4. Step 4: Simplify right side
   2,383.92x = 4,348,487.60
5. Step 5: Solve for x
   x = 4,348,487.60/2,383.92
6. Step 6: Final answer
   x = 1,824.09