Finding the Fourth Proportional to 2,776.10, 4,166.24 and 1,316.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,776.10 : 4,166.24 = 1,316.27 : x
2. Step 2: Convert to fraction form
   2,776.10/4,166.24 = 1,316.27/x
3. Step 3: Cross multiply
   2,776.10x = 4,166.24 × 1,316.27
4. Step 4: Simplify right side
   2,776.10x = 5,483,869.31
5. Step 5: Solve for x
   x = 5,483,869.31/2,776.10
6. Step 6: Final answer
   x = 1,975.39