Finding the Fourth Proportional to 1,196.58, 1,647.66 and 1,085.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.58 : 1,647.66 = 1,085.37 : x
2. Step 2: Convert to fraction form
   1,196.58/1,647.66 = 1,085.37/x
3. Step 3: Cross multiply
   1,196.58x = 1,647.66 × 1,085.37
4. Step 4: Simplify right side
   1,196.58x = 1,788,320.73
5. Step 5: Solve for x
   x = 1,788,320.73/1,196.58
6. Step 6: Final answer
   x = 1,494.53