Finding the Fourth Proportional to 1,081.21, 1,613.79 and 932.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.21 : 1,613.79 = 932.33 : x
2. Step 2: Convert to fraction form
   1,081.21/1,613.79 = 932.33/x
3. Step 3: Cross multiply
   1,081.21x = 1,613.79 × 932.33
4. Step 4: Simplify right side
   1,081.21x = 1,504,584.83
5. Step 5: Solve for x
   x = 1,504,584.83/1,081.21
6. Step 6: Final answer
   x = 1,391.58