Finding the Fourth Proportional to 3,952.76, 5,454.86 and 2,557.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,952.76 : 5,454.86 = 2,557.94 : x
2. Step 2: Convert to fraction form
   3,952.76/5,454.86 = 2,557.94/x
3. Step 3: Cross multiply
   3,952.76x = 5,454.86 × 2,557.94
4. Step 4: Simplify right side
   3,952.76x = 13,953,204.59
5. Step 5: Solve for x
   x = 13,953,204.59/3,952.76
6. Step 6: Final answer
   x = 3,529.99