Finding the Fourth Proportional to 1,015.36, 1,522.72 and 966.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015.36 : 1,522.72 = 966.72 : x
2. Step 2: Convert to fraction form
   1,015.36/1,522.72 = 966.72/x
3. Step 3: Cross multiply
   1,015.36x = 1,522.72 × 966.72
4. Step 4: Simplify right side
   1,015.36x = 1,472,043.88
5. Step 5: Solve for x
   x = 1,472,043.88/1,015.36
6. Step 6: Final answer
   x = 1,449.78