Finding the Fourth Proportional to 3,330.69, 4,995.81 and 1,139.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,330.69 : 4,995.81 = 1,139.37 : x
2. Step 2: Convert to fraction form
   3,330.69/4,995.81 = 1,139.37/x
3. Step 3: Cross multiply
   3,330.69x = 4,995.81 × 1,139.37
4. Step 4: Simplify right side
   3,330.69x = 5,692,076.04
5. Step 5: Solve for x
   x = 5,692,076.04/3,330.69
6. Step 6: Final answer
   x = 1,708.98