Finding the Fourth Proportional to 1,222.00, 1,831.89 and 636.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,222.00 : 1,831.89 = 636.32 : x
2. Step 2: Convert to fraction form
   1,222.00/1,831.89 = 636.32/x
3. Step 3: Cross multiply
   1,222.00x = 1,831.89 × 636.32
4. Step 4: Simplify right side
   1,222.00x = 1,165,660.68
5. Step 5: Solve for x
   x = 1,165,660.68/1,222.00
6. Step 6: Final answer
   x = 953.89