Finding the Fourth Proportional to 2,383.57, 3,289.27 and 1,321.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,383.57 : 3,289.27 = 1,321.40 : x
2. Step 2: Convert to fraction form
   2,383.57/3,289.27 = 1,321.40/x
3. Step 3: Cross multiply
   2,383.57x = 3,289.27 × 1,321.40
4. Step 4: Simplify right side
   2,383.57x = 4,346,441.38
5. Step 5: Solve for x
   x = 4,346,441.38/2,383.57
6. Step 6: Final answer
   x = 1,823.50