Finding the Fourth Proportional to 1,300.24, 1,949.62 and 422.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.24 : 1,949.62 = 422.56 : x
2. Step 2: Convert to fraction form
   1,300.24/1,949.62 = 422.56/x
3. Step 3: Cross multiply
   1,300.24x = 1,949.62 × 422.56
4. Step 4: Simplify right side
   1,300.24x = 823,831.43
5. Step 5: Solve for x
   x = 823,831.43/1,300.24
6. Step 6: Final answer
   x = 633.60