Finding the Fourth Proportional to 2,271.41, 3,134.30 and 1,276.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,271.41 : 3,134.30 = 1,276.80 : x
2. Step 2: Convert to fraction form
   2,271.41/3,134.30 = 1,276.80/x
3. Step 3: Cross multiply
   2,271.41x = 3,134.30 × 1,276.80
4. Step 4: Simplify right side
   2,271.41x = 4,001,867.86
5. Step 5: Solve for x
   x = 4,001,867.86/2,271.41
6. Step 6: Final answer
   x = 1,761.85