Finding the Fourth Proportional to 1,558.15, 2,150.25 and 859.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,558.15 : 2,150.25 = 859.52 : x
2. Step 2: Convert to fraction form
   1,558.15/2,150.25 = 859.52/x
3. Step 3: Cross multiply
   1,558.15x = 2,150.25 × 859.52
4. Step 4: Simplify right side
   1,558.15x = 1,848,180.73
5. Step 5: Solve for x
   x = 1,848,180.73/1,558.15
6. Step 6: Final answer
   x = 1,186.14