Finding the Fourth Proportional to 2,220.42, 3,064.17 and 1,276.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,220.42 : 3,064.17 = 1,276.27 : x
2. Step 2: Convert to fraction form
   2,220.42/3,064.17 = 1,276.27/x
3. Step 3: Cross multiply
   2,220.42x = 3,064.17 × 1,276.27
4. Step 4: Simplify right side
   2,220.42x = 3,910,708.25
5. Step 5: Solve for x
   x = 3,910,708.25/2,220.42
6. Step 6: Final answer
   x = 1,761.25