Finding the Fourth Proportional to 2,155.89, 3,234.14 and 923.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.89 : 3,234.14 = 923.27 : x
2. Step 2: Convert to fraction form
   2,155.89/3,234.14 = 923.27/x
3. Step 3: Cross multiply
   2,155.89x = 3,234.14 × 923.27
4. Step 4: Simplify right side
   2,155.89x = 2,985,994.83
5. Step 5: Solve for x
   x = 2,985,994.83/2,155.89
6. Step 6: Final answer
   x = 1,385.04