Finding the Fourth Proportional to 2,105.48, 3,157.26 and 1,131.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.48 : 3,157.26 = 1,131.32 : x
2. Step 2: Convert to fraction form
   2,105.48/3,157.26 = 1,131.32/x
3. Step 3: Cross multiply
   2,105.48x = 3,157.26 × 1,131.32
4. Step 4: Simplify right side
   2,105.48x = 3,571,871.38
5. Step 5: Solve for x
   x = 3,571,871.38/2,105.48
6. Step 6: Final answer
   x = 1,696.46