Finding the Fourth Proportional to 1,227.37, 1,693.36 and 696.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,227.37 : 1,693.36 = 696.20 : x
2. Step 2: Convert to fraction form
   1,227.37/1,693.36 = 696.20/x
3. Step 3: Cross multiply
   1,227.37x = 1,693.36 × 696.20
4. Step 4: Simplify right side
   1,227.37x = 1,178,905.72
5. Step 5: Solve for x
   x = 1,178,905.72/1,227.37
6. Step 6: Final answer
   x = 960.52