Finding the Fourth Proportional to 3,086.52, 4,631.31 and 1,238.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,086.52 : 4,631.31 = 1,238.18 : x
2. Step 2: Convert to fraction form
   3,086.52/4,631.31 = 1,238.18/x
3. Step 3: Cross multiply
   3,086.52x = 4,631.31 × 1,238.18
4. Step 4: Simplify right side
   3,086.52x = 5,734,372.26
5. Step 5: Solve for x
   x = 5,734,372.26/3,086.52
6. Step 6: Final answer
   x = 1,857.88