Finding the Fourth Proportional to 1,420.54, 1,959.24 and 923.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,420.54 : 1,959.24 = 923.35 : x
2. Step 2: Convert to fraction form
   1,420.54/1,959.24 = 923.35/x
3. Step 3: Cross multiply
   1,420.54x = 1,959.24 × 923.35
4. Step 4: Simplify right side
   1,420.54x = 1,809,061.30
5. Step 5: Solve for x
   x = 1,809,061.30/1,420.54
6. Step 6: Final answer
   x = 1,273.50