Finding the Fourth Proportional to 2,776.94, 4,167.46 and 1,316.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,776.94 : 4,167.46 = 1,316.09 : x
2. Step 2: Convert to fraction form
   2,776.94/4,167.46 = 1,316.09/x
3. Step 3: Cross multiply
   2,776.94x = 4,167.46 × 1,316.09
4. Step 4: Simplify right side
   2,776.94x = 5,484,745.85
5. Step 5: Solve for x
   x = 5,484,745.85/2,776.94
6. Step 6: Final answer
   x = 1,975.10