Finding the Fourth Proportional to 2,964.18, 4,446.81 and 1,320.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,964.18 : 4,446.81 = 1,320.72 : x
2. Step 2: Convert to fraction form
   2,964.18/4,446.81 = 1,320.72/x
3. Step 3: Cross multiply
   2,964.18x = 4,446.81 × 1,320.72
4. Step 4: Simplify right side
   2,964.18x = 5,872,990.90
5. Step 5: Solve for x
   x = 5,872,990.90/2,964.18
6. Step 6: Final answer
   x = 1,981.32