Finding the Fourth Proportional to 2,271.22, 3,134.37 and 1,387.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,271.22 : 3,134.37 = 1,387.42 : x
2. Step 2: Convert to fraction form
   2,271.22/3,134.37 = 1,387.42/x
3. Step 3: Cross multiply
   2,271.22x = 3,134.37 × 1,387.42
4. Step 4: Simplify right side
   2,271.22x = 4,348,687.63
5. Step 5: Solve for x
   x = 4,348,687.63/2,271.22
6. Step 6: Final answer
   x = 1,914.69