Finding the Fourth Proportional to 2,155.37, 3,234.16 and 922.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.37 : 3,234.16 = 922.45 : x
2. Step 2: Convert to fraction form
   2,155.37/3,234.16 = 922.45/x
3. Step 3: Cross multiply
   2,155.37x = 3,234.16 × 922.45
4. Step 4: Simplify right side
   2,155.37x = 2,983,350.89
5. Step 5: Solve for x
   x = 2,983,350.89/2,155.37
6. Step 6: Final answer
   x = 1,384.15