Finding the Fourth Proportional to 2,571.78, 3,549.08 and 1,422.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,571.78 : 3,549.08 = 1,422.02 : x
2. Step 2: Convert to fraction form
   2,571.78/3,549.08 = 1,422.02/x
3. Step 3: Cross multiply
   2,571.78x = 3,549.08 × 1,422.02
4. Step 4: Simplify right side
   2,571.78x = 5,046,837.89
5. Step 5: Solve for x
   x = 5,046,837.89/2,571.78
6. Step 6: Final answer
   x = 1,962.39