Finding the Fourth Proportional to 2,758.10, 4,133.55 and 1,277.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,758.10 : 4,133.55 = 1,277.15 : x
2. Step 2: Convert to fraction form
   2,758.10/4,133.55 = 1,277.15/x
3. Step 3: Cross multiply
   2,758.10x = 4,133.55 × 1,277.15
4. Step 4: Simplify right side
   2,758.10x = 5,279,163.38
5. Step 5: Solve for x
   x = 5,279,163.38/2,758.10
6. Step 6: Final answer
   x = 1,914.06