Finding the Fourth Proportional to 1,146.82, 1,582.64 and 622.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146.82 : 1,582.64 = 622.88 : x
2. Step 2: Convert to fraction form
   1,146.82/1,582.64 = 622.88/x
3. Step 3: Cross multiply
   1,146.82x = 1,582.64 × 622.88
4. Step 4: Simplify right side
   1,146.82x = 985,791.69
5. Step 5: Solve for x
   x = 985,791.69/1,146.82
6. Step 6: Final answer
   x = 859.59