Finding the Fourth Proportional to 1,421.25, 1,960.06 and 923.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,421.25 : 1,960.06 = 923.42 : x
2. Step 2: Convert to fraction form
   1,421.25/1,960.06 = 923.42/x
3. Step 3: Cross multiply
   1,421.25x = 1,960.06 × 923.42
4. Step 4: Simplify right side
   1,421.25x = 1,809,958.61
5. Step 5: Solve for x
   x = 1,809,958.61/1,421.25
6. Step 6: Final answer
   x = 1,273.50