Finding the Fourth Proportional to 3,086.69, 4,629.93 and 1,237.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,086.69 : 4,629.93 = 1,237.31 : x
2. Step 2: Convert to fraction form
   3,086.69/4,629.93 = 1,237.31/x
3. Step 3: Cross multiply
   3,086.69x = 4,629.93 × 1,237.31
4. Step 4: Simplify right side
   3,086.69x = 5,728,648.26
5. Step 5: Solve for x
   x = 5,728,648.26/3,086.69
6. Step 6: Final answer
   x = 1,855.92