Finding the Fourth Proportional to 2,798.36, 4,198.37 and 1,155

Step by Step Solution

1. Step 1: Write the proportion equation
   2,798.36 : 4,198.37 = 1,155 : x
2. Step 2: Convert to fraction form
   2,798.36/4,198.37 = 1,155/x
3. Step 3: Cross multiply
   2,798.36x = 4,198.37 × 1,155
4. Step 4: Simplify right side
   2,798.36x = 4,849,111.58
5. Step 5: Solve for x
   x = 4,849,111.58/2,798.36
6. Step 6: Final answer
   x = 1,732.84