Finding the Fourth Proportional to 1,227.51, 1,693.96 and 696.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,227.51 : 1,693.96 = 696.38 : x
2. Step 2: Convert to fraction form
   1,227.51/1,693.96 = 696.38/x
3. Step 3: Cross multiply
   1,227.51x = 1,693.96 × 696.38
4. Step 4: Simplify right side
   1,227.51x = 1,179,629.65
5. Step 5: Solve for x
   x = 1,179,629.65/1,227.51
6. Step 6: Final answer
   x = 960.99