Finding the Fourth Proportional to 1,196.45, 1,651.00 and 665.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.45 : 1,651.00 = 665.31 : x
2. Step 2: Convert to fraction form
   1,196.45/1,651.00 = 665.31/x
3. Step 3: Cross multiply
   1,196.45x = 1,651.00 × 665.31
4. Step 4: Simplify right side
   1,196.45x = 1,098,432.59
5. Step 5: Solve for x
   x = 1,098,432.59/1,196.45
6. Step 6: Final answer
   x = 918.07