Finding the Fourth Proportional to 2,676.60, 4,017.78 and 1,377.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,676.60 : 4,017.78 = 1,377.72 : x
2. Step 2: Convert to fraction form
   2,676.60/4,017.78 = 1,377.72/x
3. Step 3: Cross multiply
   2,676.60x = 4,017.78 × 1,377.72
4. Step 4: Simplify right side
   2,676.60x = 5,535,375.86
5. Step 5: Solve for x
   x = 5,535,375.86/2,676.60
6. Step 6: Final answer
   x = 2,068.06