Finding the Fourth Proportional to 2,775.78, 4,162.86 and 1,314.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,775.78 : 4,162.86 = 1,314.54 : x
2. Step 2: Convert to fraction form
   2,775.78/4,162.86 = 1,314.54/x
3. Step 3: Cross multiply
   2,775.78x = 4,162.86 × 1,314.54
4. Step 4: Simplify right side
   2,775.78x = 5,472,245.98
5. Step 5: Solve for x
   x = 5,472,245.98/2,775.78
6. Step 6: Final answer
   x = 1,971.43