Finding the Fourth Proportional to 2,541.78, 3,507.30 and 1,422.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,541.78 : 3,507.30 = 1,422.63 : x
2. Step 2: Convert to fraction form
   2,541.78/3,507.30 = 1,422.63/x
3. Step 3: Cross multiply
   2,541.78x = 3,507.30 × 1,422.63
4. Step 4: Simplify right side
   2,541.78x = 4,989,590.20
5. Step 5: Solve for x
   x = 4,989,590.20/2,541.78
6. Step 6: Final answer
   x = 1,963.03