Finding the Fourth Proportional to 1,408.04, 1,945.56 and 1,016.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.04 : 1,945.56 = 1,016.80 : x
2. Step 2: Convert to fraction form
   1,408.04/1,945.56 = 1,016.80/x
3. Step 3: Cross multiply
   1,408.04x = 1,945.56 × 1,016.80
4. Step 4: Simplify right side
   1,408.04x = 1,978,245.41
5. Step 5: Solve for x
   x = 1,978,245.41/1,408.04
6. Step 6: Final answer
   x = 1,404.96