Finding the Fourth Proportional to 2,929.72, 4,395.28 and 849.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,929.72 : 4,395.28 = 849.78 : x
2. Step 2: Convert to fraction form
   2,929.72/4,395.28 = 849.78/x
3. Step 3: Cross multiply
   2,929.72x = 4,395.28 × 849.78
4. Step 4: Simplify right side
   2,929.72x = 3,735,021.04
5. Step 5: Solve for x
   x = 3,735,021.04/2,929.72
6. Step 6: Final answer
   x = 1,274.87