Finding the Fourth Proportional to 2,016.78, 2,783.33 and 1,120.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.78 : 2,783.33 = 1,120.60 : x
2. Step 2: Convert to fraction form
   2,016.78/2,783.33 = 1,120.60/x
3. Step 3: Cross multiply
   2,016.78x = 2,783.33 × 1,120.60
4. Step 4: Simplify right side
   2,016.78x = 3,118,999.60
5. Step 5: Solve for x
   x = 3,118,999.60/2,016.78
6. Step 6: Final answer
   x = 1,546.52