Finding the Fourth Proportional to 1,053.53, 1,579.52 and 559.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.53 : 1,579.52 = 559.61 : x
2. Step 2: Convert to fraction form
   1,053.53/1,579.52 = 559.61/x
3. Step 3: Cross multiply
   1,053.53x = 1,579.52 × 559.61
4. Step 4: Simplify right side
   1,053.53x = 883,908.69
5. Step 5: Solve for x
   x = 883,908.69/1,053.53
6. Step 6: Final answer
   x = 839.00