Finding the Fourth Proportional to 2,109.42, 2,911.02 and 1,165.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.42 : 2,911.02 = 1,165.23 : x
2. Step 2: Convert to fraction form
   2,109.42/2,911.02 = 1,165.23/x
3. Step 3: Cross multiply
   2,109.42x = 2,911.02 × 1,165.23
4. Step 4: Simplify right side
   2,109.42x = 3,392,007.83
5. Step 5: Solve for x
   x = 3,392,007.83/2,109.42
6. Step 6: Final answer
   x = 1,608.03