Finding the Fourth Proportional to 1,081.59, 1,493.15 and 845.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.59 : 1,493.15 = 845.12 : x
2. Step 2: Convert to fraction form
   1,081.59/1,493.15 = 845.12/x
3. Step 3: Cross multiply
   1,081.59x = 1,493.15 × 845.12
4. Step 4: Simplify right side
   1,081.59x = 1,261,879.24
5. Step 5: Solve for x
   x = 1,261,879.24/1,081.59
6. Step 6: Final answer
   x = 1,166.69