Finding the Fourth Proportional to 1,046.55, 1,570.18 and 559.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,046.55 : 1,570.18 = 559.50 : x
2. Step 2: Convert to fraction form
   1,046.55/1,570.18 = 559.50/x
3. Step 3: Cross multiply
   1,046.55x = 1,570.18 × 559.50
4. Step 4: Simplify right side
   1,046.55x = 878,515.71
5. Step 5: Solve for x
   x = 878,515.71/1,046.55
6. Step 6: Final answer
   x = 839.44