Finding the Fourth Proportional to 2,383.02, 3,571.89 and 920.97

Step by Step Solution

1. Step 1: Write the proportion equation
   2,383.02 : 3,571.89 = 920.97 : x
2. Step 2: Convert to fraction form
   2,383.02/3,571.89 = 920.97/x
3. Step 3: Cross multiply
   2,383.02x = 3,571.89 × 920.97
4. Step 4: Simplify right side
   2,383.02x = 3,289,603.53
5. Step 5: Solve for x
   x = 3,289,603.53/2,383.02
6. Step 6: Final answer
   x = 1,380.43