Finding the Fourth Proportional to 1,227.55, 1,693.86 and 696.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,227.55 : 1,693.86 = 696.37 : x
2. Step 2: Convert to fraction form
   1,227.55/1,693.86 = 696.37/x
3. Step 3: Cross multiply
   1,227.55x = 1,693.86 × 696.37
4. Step 4: Simplify right side
   1,227.55x = 1,179,553.29
5. Step 5: Solve for x
   x = 1,179,553.29/1,227.55
6. Step 6: Final answer
   x = 960.90