Finding the Fourth Proportional to 2,698.61, 4,046.77 and 1,139.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,698.61 : 4,046.77 = 1,139.31 : x
2. Step 2: Convert to fraction form
   2,698.61/4,046.77 = 1,139.31/x
3. Step 3: Cross multiply
   2,698.61x = 4,046.77 × 1,139.31
4. Step 4: Simplify right side
   2,698.61x = 4,610,525.53
5. Step 5: Solve for x
   x = 4,610,525.53/2,698.61
6. Step 6: Final answer
   x = 1,708.48