Finding the Fourth Proportional to 1,061.48, 1,464.72 and 668.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.48 : 1,464.72 = 668.36 : x
2. Step 2: Convert to fraction form
   1,061.48/1,464.72 = 668.36/x
3. Step 3: Cross multiply
   1,061.48x = 1,464.72 × 668.36
4. Step 4: Simplify right side
   1,061.48x = 978,960.26
5. Step 5: Solve for x
   x = 978,960.26/1,061.48
6. Step 6: Final answer
   x = 922.26