Finding the Fourth Proportional to 2,758.76, 4,139.91 and 1,772.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,758.76 : 4,139.91 = 1,772.28 : x
2. Step 2: Convert to fraction form
   2,758.76/4,139.91 = 1,772.28/x
3. Step 3: Cross multiply
   2,758.76x = 4,139.91 × 1,772.28
4. Step 4: Simplify right side
   2,758.76x = 7,337,079.69
5. Step 5: Solve for x
   x = 7,337,079.69/2,758.76
6. Step 6: Final answer
   x = 2,659.56