Finding the Fourth Proportional to 1,420.35, 1,958.99 and 923.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,420.35 : 1,958.99 = 923.16 : x
2. Step 2: Convert to fraction form
   1,420.35/1,958.99 = 923.16/x
3. Step 3: Cross multiply
   1,420.35x = 1,958.99 × 923.16
4. Step 4: Simplify right side
   1,420.35x = 1,808,456.59
5. Step 5: Solve for x
   x = 1,808,456.59/1,420.35
6. Step 6: Final answer
   x = 1,273.25