Finding the Fourth Proportional to 1,168.51, 1,609.59 and 1,091.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,168.51 : 1,609.59 = 1,091.98 : x
2. Step 2: Convert to fraction form
   1,168.51/1,609.59 = 1,091.98/x
3. Step 3: Cross multiply
   1,168.51x = 1,609.59 × 1,091.98
4. Step 4: Simplify right side
   1,168.51x = 1,757,640.09
5. Step 5: Solve for x
   x = 1,757,640.09/1,168.51
6. Step 6: Final answer
   x = 1,504.17