Finding the Fourth Proportional to 1,421.50, 1,960.41 and 923.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,421.50 : 1,960.41 = 923.67 : x
2. Step 2: Convert to fraction form
   1,421.50/1,960.41 = 923.67/x
3. Step 3: Cross multiply
   1,421.50x = 1,960.41 × 923.67
4. Step 4: Simplify right side
   1,421.50x = 1,810,771.90
5. Step 5: Solve for x
   x = 1,810,771.90/1,421.50
6. Step 6: Final answer
   x = 1,273.85