Finding the Fourth Proportional to 2,016.80, 3,023.52 and 783.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.80 : 3,023.52 = 783.56 : x
2. Step 2: Convert to fraction form
   2,016.80/3,023.52 = 783.56/x
3. Step 3: Cross multiply
   2,016.80x = 3,023.52 × 783.56
4. Step 4: Simplify right side
   2,016.80x = 2,369,109.33
5. Step 5: Solve for x
   x = 2,369,109.33/2,016.80
6. Step 6: Final answer
   x = 1,174.69