Finding the Fourth Proportional to 2,016.79, 2,783.12 and 1,177.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.79 : 2,783.12 = 1,177.56 : x
2. Step 2: Convert to fraction form
   2,016.79/2,783.12 = 1,177.56/x
3. Step 3: Cross multiply
   2,016.79x = 2,783.12 × 1,177.56
4. Step 4: Simplify right side
   2,016.79x = 3,277,300.69
5. Step 5: Solve for x
   x = 3,277,300.69/2,016.79
6. Step 6: Final answer
   x = 1,625.01