Finding the Fourth Proportional to 2,698.62, 4,046.76 and 1,139.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,698.62 : 4,046.76 = 1,139.32 : x
2. Step 2: Convert to fraction form
   2,698.62/4,046.76 = 1,139.32/x
3. Step 3: Cross multiply
   2,698.62x = 4,046.76 × 1,139.32
4. Step 4: Simplify right side
   2,698.62x = 4,610,554.60
5. Step 5: Solve for x
   x = 4,610,554.60/2,698.62
6. Step 6: Final answer
   x = 1,708.49