Finding the Fourth Proportional to 1,061.20, 1,463.56 and 936.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.20 : 1,463.56 = 936.96 : x
2. Step 2: Convert to fraction form
   1,061.20/1,463.56 = 936.96/x
3. Step 3: Cross multiply
   1,061.20x = 1,463.56 × 936.96
4. Step 4: Simplify right side
   1,061.20x = 1,371,297.18
5. Step 5: Solve for x
   x = 1,371,297.18/1,061.20
6. Step 6: Final answer
   x = 1,292.21