Finding the Fourth Proportional to 2,111.20, 2,916.48 and 2,024.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.20 : 2,916.48 = 2,024.80 : x
2. Step 2: Convert to fraction form
   2,111.20/2,916.48 = 2,024.80/x
3. Step 3: Cross multiply
   2,111.20x = 2,916.48 × 2,024.80
4. Step 4: Simplify right side
   2,111.20x = 5,905,288.70
5. Step 5: Solve for x
   x = 5,905,288.70/2,111.20
6. Step 6: Final answer
   x = 2,797.12