Finding the Fourth Proportional to 2,017.91, 2,784.78 and 1,179.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.91 : 2,784.78 = 1,179.23 : x
2. Step 2: Convert to fraction form
   2,017.91/2,784.78 = 1,179.23/x
3. Step 3: Cross multiply
   2,017.91x = 2,784.78 × 1,179.23
4. Step 4: Simplify right side
   2,017.91x = 3,283,882.20
5. Step 5: Solve for x
   x = 3,283,882.20/2,017.91
6. Step 6: Final answer
   x = 1,627.37