Finding the Fourth Proportional to 1,196.09, 1,650.64 and 665.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.09 : 1,650.64 = 665.00 : x
2. Step 2: Convert to fraction form
   1,196.09/1,650.64 = 665.00/x
3. Step 3: Cross multiply
   1,196.09x = 1,650.64 × 665.00
4. Step 4: Simplify right side
   1,196.09x = 1,097,667.35
5. Step 5: Solve for x
   x = 1,097,667.35/1,196.09
6. Step 6: Final answer
   x = 917.72