Finding the Fourth Proportional to 1,622.27, 2,238.78 and 959.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,622.27 : 2,238.78 = 959.15 : x
2. Step 2: Convert to fraction form
   1,622.27/2,238.78 = 959.15/x
3. Step 3: Cross multiply
   1,622.27x = 2,238.78 × 959.15
4. Step 4: Simplify right side
   1,622.27x = 2,147,314.64
5. Step 5: Solve for x
   x = 2,147,314.64/1,622.27
6. Step 6: Final answer
   x = 1,323.65