Finding the Fourth Proportional to 3,329.76, 4,994.52 and 864.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,329.76 : 4,994.52 = 864.72 : x
2. Step 2: Convert to fraction form
   3,329.76/4,994.52 = 864.72/x
3. Step 3: Cross multiply
   3,329.76x = 4,994.52 × 864.72
4. Step 4: Simplify right side
   3,329.76x = 4,318,861.33
5. Step 5: Solve for x
   x = 4,318,861.33/3,329.76
6. Step 6: Final answer
   x = 1,297.05