Finding the Fourth Proportional to 1,420.29, 1,960.61 and 954.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,420.29 : 1,960.61 = 954.81 : x
2. Step 2: Convert to fraction form
   1,420.29/1,960.61 = 954.81/x
3. Step 3: Cross multiply
   1,420.29x = 1,960.61 × 954.81
4. Step 4: Simplify right side
   1,420.29x = 1,872,005.26
5. Step 5: Solve for x
   x = 1,872,005.26/1,420.29
6. Step 6: Final answer
   x = 1,318.04