Finding the Fourth Proportional to 1,608.06, 2,411.91 and 1,091.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,608.06 : 2,411.91 = 1,091.38 : x
2. Step 2: Convert to fraction form
   1,608.06/2,411.91 = 1,091.38/x
3. Step 3: Cross multiply
   1,608.06x = 2,411.91 × 1,091.38
4. Step 4: Simplify right side
   1,608.06x = 2,632,310.34
5. Step 5: Solve for x
   x = 2,632,310.34/1,608.06
6. Step 6: Final answer
   x = 1,636.95