Finding the Fourth Proportional to 2,155.62, 3,233.76 and 923.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.62 : 3,233.76 = 923.03 : x
2. Step 2: Convert to fraction form
   2,155.62/3,233.76 = 923.03/x
3. Step 3: Cross multiply
   2,155.62x = 3,233.76 × 923.03
4. Step 4: Simplify right side
   2,155.62x = 2,984,857.49
5. Step 5: Solve for x
   x = 2,984,857.49/2,155.62
6. Step 6: Final answer
   x = 1,384.69