Finding the Fourth Proportional to 1,227.48, 1,693.78 and 696.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,227.48 : 1,693.78 = 696.32 : x
2. Step 2: Convert to fraction form
   1,227.48/1,693.78 = 696.32/x
3. Step 3: Cross multiply
   1,227.48x = 1,693.78 × 696.32
4. Step 4: Simplify right side
   1,227.48x = 1,179,412.89
5. Step 5: Solve for x
   x = 1,179,412.89/1,227.48
6. Step 6: Final answer
   x = 960.84