Finding the Fourth Proportional to 2,002.28, 2,764.16 and 1,257.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,002.28 : 2,764.16 = 1,257.34 : x
2. Step 2: Convert to fraction form
   2,002.28/2,764.16 = 1,257.34/x
3. Step 3: Cross multiply
   2,002.28x = 2,764.16 × 1,257.34
4. Step 4: Simplify right side
   2,002.28x = 3,475,488.93
5. Step 5: Solve for x
   x = 3,475,488.93/2,002.28
6. Step 6: Final answer
   x = 1,735.77