Finding the Fourth Proportional to 1,131.05, 1,695.11 and 611.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.05 : 1,695.11 = 611.27 : x
2. Step 2: Convert to fraction form
   1,131.05/1,695.11 = 611.27/x
3. Step 3: Cross multiply
   1,131.05x = 1,695.11 × 611.27
4. Step 4: Simplify right side
   1,131.05x = 1,036,169.89
5. Step 5: Solve for x
   x = 1,036,169.89/1,131.05
6. Step 6: Final answer
   x = 916.11