Finding the Fourth Proportional to 1,112.90, 1,668.83 and 650.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.90 : 1,668.83 = 650.82 : x
2. Step 2: Convert to fraction form
   1,112.90/1,668.83 = 650.82/x
3. Step 3: Cross multiply
   1,112.90x = 1,668.83 × 650.82
4. Step 4: Simplify right side
   1,112.90x = 1,086,109.57
5. Step 5: Solve for x
   x = 1,086,109.57/1,112.90
6. Step 6: Final answer
   x = 975.93