Finding the Fourth Proportional to 1,357.26, 1,871.52 and 859.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.26 : 1,871.52 = 859.32 : x
2. Step 2: Convert to fraction form
   1,357.26/1,871.52 = 859.32/x
3. Step 3: Cross multiply
   1,357.26x = 1,871.52 × 859.32
4. Step 4: Simplify right side
   1,357.26x = 1,608,234.57
5. Step 5: Solve for x
   x = 1,608,234.57/1,357.26
6. Step 6: Final answer
   x = 1,184.91