Finding the Fourth Proportional to 1,172.25, 1,608.77 and 1,061.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,172.25 : 1,608.77 = 1,061.48 : x
2. Step 2: Convert to fraction form
   1,172.25/1,608.77 = 1,061.48/x
3. Step 3: Cross multiply
   1,172.25x = 1,608.77 × 1,061.48
4. Step 4: Simplify right side
   1,172.25x = 1,707,674.53
5. Step 5: Solve for x
   x = 1,707,674.53/1,172.25
6. Step 6: Final answer
   x = 1,456.75