Finding the Fourth Proportional to 2,981.72, 4,456.40 and 2,748.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,981.72 : 4,456.40 = 2,748.28 : x
2. Step 2: Convert to fraction form
   2,981.72/4,456.40 = 2,748.28/x
3. Step 3: Cross multiply
   2,981.72x = 4,456.40 × 2,748.28
4. Step 4: Simplify right side
   2,981.72x = 12,247,434.99
5. Step 5: Solve for x
   x = 12,247,434.99/2,981.72
6. Step 6: Final answer
   x = 4,107.51