Finding the Fourth Proportional to 2,115.42, 3,174.06 and 1,140.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,115.42 : 3,174.06 = 1,140.38 : x
2. Step 2: Convert to fraction form
   2,115.42/3,174.06 = 1,140.38/x
3. Step 3: Cross multiply
   2,115.42x = 3,174.06 × 1,140.38
4. Step 4: Simplify right side
   2,115.42x = 3,619,634.54
5. Step 5: Solve for x
   x = 3,619,634.54/2,115.42
6. Step 6: Final answer
   x = 1,711.07