Finding the Fourth Proportional to 2,271.23, 3,134.31 and 1,276.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,271.23 : 3,134.31 = 1,276.55 : x
2. Step 2: Convert to fraction form
   2,271.23/3,134.31 = 1,276.55/x
3. Step 3: Cross multiply
   2,271.23x = 3,134.31 × 1,276.55
4. Step 4: Simplify right side
   2,271.23x = 4,001,103.43
5. Step 5: Solve for x
   x = 4,001,103.43/2,271.23
6. Step 6: Final answer
   x = 1,761.65