Finding the Fourth Proportional to 2,688.10, 4,016.56 and 1,944.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,688.10 : 4,016.56 = 1,944.18 : x
2. Step 2: Convert to fraction form
   2,688.10/4,016.56 = 1,944.18/x
3. Step 3: Cross multiply
   2,688.10x = 4,016.56 × 1,944.18
4. Step 4: Simplify right side
   2,688.10x = 7,808,915.62
5. Step 5: Solve for x
   x = 7,808,915.62/2,688.10
6. Step 6: Final answer
   x = 2,904.99