Finding the Fourth Proportional to 1,112.45, 1,669.15 and 650.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.45 : 1,669.15 = 650.22 : x
2. Step 2: Convert to fraction form
   1,112.45/1,669.15 = 650.22/x
3. Step 3: Cross multiply
   1,112.45x = 1,669.15 × 650.22
4. Step 4: Simplify right side
   1,112.45x = 1,085,314.71
5. Step 5: Solve for x
   x = 1,085,314.71/1,112.45
6. Step 6: Final answer
   x = 975.61