Finding the Fourth Proportional to 2,776.44, 4,166.71 and 1,315.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,776.44 : 4,166.71 = 1,315.59 : x
2. Step 2: Convert to fraction form
   2,776.44/4,166.71 = 1,315.59/x
3. Step 3: Cross multiply
   2,776.44x = 4,166.71 × 1,315.59
4. Step 4: Simplify right side
   2,776.44x = 5,481,675.43
5. Step 5: Solve for x
   x = 5,481,675.43/2,776.44
6. Step 6: Final answer
   x = 1,974.35