Finding the Fourth Proportional to 1,196.22, 1,650.62 and 665.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.22 : 1,650.62 = 665.07 : x
2. Step 2: Convert to fraction form
   1,196.22/1,650.62 = 665.07/x
3. Step 3: Cross multiply
   1,196.22x = 1,650.62 × 665.07
4. Step 4: Simplify right side
   1,196.22x = 1,097,777.84
5. Step 5: Solve for x
   x = 1,097,777.84/1,196.22
6. Step 6: Final answer
   x = 917.71