Finding the Fourth Proportional to 1,365.80, 1,883.78 and 1,016.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,365.80 : 1,883.78 = 1,016.36 : x
2. Step 2: Convert to fraction form
   1,365.80/1,883.78 = 1,016.36/x
3. Step 3: Cross multiply
   1,365.80x = 1,883.78 × 1,016.36
4. Step 4: Simplify right side
   1,365.80x = 1,914,598.64
5. Step 5: Solve for x
   x = 1,914,598.64/1,365.80
6. Step 6: Final answer
   x = 1,401.81