Finding the Fourth Proportional to 1,284.27, 1,923.89 and 959.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,284.27 : 1,923.89 = 959.91 : x
2. Step 2: Convert to fraction form
   1,284.27/1,923.89 = 959.91/x
3. Step 3: Cross multiply
   1,284.27x = 1,923.89 × 959.91
4. Step 4: Simplify right side
   1,284.27x = 1,846,756.45
5. Step 5: Solve for x
   x = 1,846,756.45/1,284.27
6. Step 6: Final answer
   x = 1,437.98