Finding the Fourth Proportional to 2,986.89, 4,480.37 and 1,138.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,986.89 : 4,480.37 = 1,138.02 : x
2. Step 2: Convert to fraction form
   2,986.89/4,480.37 = 1,138.02/x
3. Step 3: Cross multiply
   2,986.89x = 4,480.37 × 1,138.02
4. Step 4: Simplify right side
   2,986.89x = 5,098,744.98
5. Step 5: Solve for x
   x = 5,098,744.98/2,986.89
6. Step 6: Final answer
   x = 1,707.04