Finding the Fourth Proportional to 1,112.82, 1,668.14 and 624.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.82 : 1,668.14 = 624.82 : x
2. Step 2: Convert to fraction form
   1,112.82/1,668.14 = 624.82/x
3. Step 3: Cross multiply
   1,112.82x = 1,668.14 × 624.82
4. Step 4: Simplify right side
   1,112.82x = 1,042,287.23
5. Step 5: Solve for x
   x = 1,042,287.23/1,112.82
6. Step 6: Final answer
   x = 936.62