Finding the Fourth Proportional to 1,622.51, 2,238.81 and 959.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,622.51 : 2,238.81 = 959.12 : x
2. Step 2: Convert to fraction form
   1,622.51/2,238.81 = 959.12/x
3. Step 3: Cross multiply
   1,622.51x = 2,238.81 × 959.12
4. Step 4: Simplify right side
   1,622.51x = 2,147,287.45
5. Step 5: Solve for x
   x = 2,147,287.45/1,622.51
6. Step 6: Final answer
   x = 1,323.44