Finding the Fourth Proportional to 2,676.18, 4,010.76 and 1,378.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,676.18 : 4,010.76 = 1,378.56 : x
2. Step 2: Convert to fraction form
   2,676.18/4,010.76 = 1,378.56/x
3. Step 3: Cross multiply
   2,676.18x = 4,010.76 × 1,378.56
4. Step 4: Simplify right side
   2,676.18x = 5,529,073.31
5. Step 5: Solve for x
   x = 5,529,073.31/2,676.18
6. Step 6: Final answer
   x = 2,066.03