Finding the Fourth Proportional to 2,698.70, 4,048.34 and 1,238.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,698.70 : 4,048.34 = 1,238.27 : x
2. Step 2: Convert to fraction form
   2,698.70/4,048.34 = 1,238.27/x
3. Step 3: Cross multiply
   2,698.70x = 4,048.34 × 1,238.27
4. Step 4: Simplify right side
   2,698.70x = 5,012,911.54
5. Step 5: Solve for x
   x = 5,012,911.54/2,698.70
6. Step 6: Final answer
   x = 1,857.53