Finding the Fourth Proportional to 962.67, 1,449.18 and 828.72

Step by Step Solution

1. Step 1: Write the proportion equation
   962.67 : 1,449.18 = 828.72 : x
2. Step 2: Convert to fraction form
   962.67/1,449.18 = 828.72/x
3. Step 3: Cross multiply
   962.67x = 1,449.18 × 828.72
4. Step 4: Simplify right side
   962.67x = 1,200,964.45
5. Step 5: Solve for x
   x = 1,200,964.45/962.67
6. Step 6: Final answer
   x = 1,247.53