Finding the Fourth Proportional to 2,271.05, 3,134.06 and 1,276.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,271.05 : 3,134.06 = 1,276.30 : x
2. Step 2: Convert to fraction form
   2,271.05/3,134.06 = 1,276.30/x
3. Step 3: Cross multiply
   2,271.05x = 3,134.06 × 1,276.30
4. Step 4: Simplify right side
   2,271.05x = 3,999,978.73
5. Step 5: Solve for x
   x = 3,999,978.73/2,271.05
6. Step 6: Final answer
   x = 1,761.29