Finding the Fourth Proportional to 1,559.57, 2,339.37 and 405.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,559.57 : 2,339.37 = 405.32 : x
2. Step 2: Convert to fraction form
   1,559.57/2,339.37 = 405.32/x
3. Step 3: Cross multiply
   1,559.57x = 2,339.37 × 405.32
4. Step 4: Simplify right side
   1,559.57x = 948,196.05
5. Step 5: Solve for x
   x = 948,196.05/1,559.57
6. Step 6: Final answer
   x = 607.99