Finding the Fourth Proportional to 2,758.77, 4,134.56 and 1,198.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,758.77 : 4,134.56 = 1,198.31 : x
2. Step 2: Convert to fraction form
   2,758.77/4,134.56 = 1,198.31/x
3. Step 3: Cross multiply
   2,758.77x = 4,134.56 × 1,198.31
4. Step 4: Simplify right side
   2,758.77x = 4,954,457.93
5. Step 5: Solve for x
   x = 4,954,457.93/2,758.77
6. Step 6: Final answer
   x = 1,795.89