Finding the Fourth Proportional to 1,208.52, 1,813.69 and 559.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,208.52 : 1,813.69 = 559.71 : x
2. Step 2: Convert to fraction form
   1,208.52/1,813.69 = 559.71/x
3. Step 3: Cross multiply
   1,208.52x = 1,813.69 × 559.71
4. Step 4: Simplify right side
   1,208.52x = 1,015,141.13
5. Step 5: Solve for x
   x = 1,015,141.13/1,208.52
6. Step 6: Final answer
   x = 839.99