Finding the Fourth Proportional to 2,016.88, 2,783.56 and 1,318.66

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.88 : 2,783.56 = 1,318.66 : x
2. Step 2: Convert to fraction form
   2,016.88/2,783.56 = 1,318.66/x
3. Step 3: Cross multiply
   2,016.88x = 2,783.56 × 1,318.66
4. Step 4: Simplify right side
   2,016.88x = 3,670,569.23
5. Step 5: Solve for x
   x = 3,670,569.23/2,016.88
6. Step 6: Final answer
   x = 1,819.92