Finding the Fourth Proportional to 2,546.78, 3,514.55 and 1,427.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,546.78 : 3,514.55 = 1,427.72 : x
2. Step 2: Convert to fraction form
   2,546.78/3,514.55 = 1,427.72/x
3. Step 3: Cross multiply
   2,546.78x = 3,514.55 × 1,427.72
4. Step 4: Simplify right side
   2,546.78x = 5,017,787.74
5. Step 5: Solve for x
   x = 5,017,787.74/2,546.78
6. Step 6: Final answer
   x = 1,970.25