Finding the Fourth Proportional to 5,760.72, 8,642.16 and 1,864.62

Step by Step Solution

1. Step 1: Write the proportion equation
   5,760.72 : 8,642.16 = 1,864.62 : x
2. Step 2: Convert to fraction form
   5,760.72/8,642.16 = 1,864.62/x
3. Step 3: Cross multiply
   5,760.72x = 8,642.16 × 1,864.62
4. Step 4: Simplify right side
   5,760.72x = 16,114,344.38
5. Step 5: Solve for x
   x = 16,114,344.38/5,760.72
6. Step 6: Final answer
   x = 2,797.28