Finding the Fourth Proportional to 2,508.57, 3,756.78 and 1,956.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,508.57 : 3,756.78 = 1,956.15 : x
2. Step 2: Convert to fraction form
   2,508.57/3,756.78 = 1,956.15/x
3. Step 3: Cross multiply
   2,508.57x = 3,756.78 × 1,956.15
4. Step 4: Simplify right side
   2,508.57x = 7,348,825.20
5. Step 5: Solve for x
   x = 7,348,825.20/2,508.57
6. Step 6: Final answer
   x = 2,929.49