Finding the Fourth Proportional to 1,325.52, 1,828.71 and 859.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,325.52 : 1,828.71 = 859.50 : x
2. Step 2: Convert to fraction form
   1,325.52/1,828.71 = 859.50/x
3. Step 3: Cross multiply
   1,325.52x = 1,828.71 × 859.50
4. Step 4: Simplify right side
   1,325.52x = 1,571,776.25
5. Step 5: Solve for x
   x = 1,571,776.25/1,325.52
6. Step 6: Final answer
   x = 1,185.78