Finding the Fourth Proportional to 2,174.85, 3,256.81 and 1,131.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,174.85 : 3,256.81 = 1,131.17 : x
2. Step 2: Convert to fraction form
   2,174.85/3,256.81 = 1,131.17/x
3. Step 3: Cross multiply
   2,174.85x = 3,256.81 × 1,131.17
4. Step 4: Simplify right side
   2,174.85x = 3,683,986.66
5. Step 5: Solve for x
   x = 3,683,986.66/2,174.85
6. Step 6: Final answer
   x = 1,693.90