Finding the Fourth Proportional to 1,228.82, 1,843.25 and 579.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,228.82 : 1,843.25 = 579.42 : x
2. Step 2: Convert to fraction form
   1,228.82/1,843.25 = 579.42/x
3. Step 3: Cross multiply
   1,228.82x = 1,843.25 × 579.42
4. Step 4: Simplify right side
   1,228.82x = 1,068,013.02
5. Step 5: Solve for x
   x = 1,068,013.02/1,228.82
6. Step 6: Final answer
   x = 869.14