Finding the Fourth Proportional to 1,911.30, 2,637.56 and 1,165.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,911.30 : 2,637.56 = 1,165.29 : x
2. Step 2: Convert to fraction form
   1,911.30/2,637.56 = 1,165.29/x
3. Step 3: Cross multiply
   1,911.30x = 2,637.56 × 1,165.29
4. Step 4: Simplify right side
   1,911.30x = 3,073,515.31
5. Step 5: Solve for x
   x = 3,073,515.31/1,911.30
6. Step 6: Final answer
   x = 1,608.08