Finding the Fourth Proportional to 2,221.16, 3,064.94 and 1,276.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,221.16 : 3,064.94 = 1,276.76 : x
2. Step 2: Convert to fraction form
   2,221.16/3,064.94 = 1,276.76/x
3. Step 3: Cross multiply
   2,221.16x = 3,064.94 × 1,276.76
4. Step 4: Simplify right side
   2,221.16x = 3,913,198.86
5. Step 5: Solve for x
   x = 3,913,198.86/2,221.16
6. Step 6: Final answer
   x = 1,761.79