Finding the Fourth Proportional to 3,486, 5,227.86 and 1,145.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,486 : 5,227.86 = 1,145.37 : x
2. Step 2: Convert to fraction form
   3,486/5,227.86 = 1,145.37/x
3. Step 3: Cross multiply
   3,486x = 5,227.86 × 1,145.37
4. Step 4: Simplify right side
   3,486x = 5,987,834.01
5. Step 5: Solve for x
   x = 5,987,834.01/3,486
6. Step 6: Final answer
   x = 1,717.68