Finding the Fourth Proportional to 2,504.94, 3,456.72 and 1,385.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,504.94 : 3,456.72 = 1,385.86 : x
2. Step 2: Convert to fraction form
   2,504.94/3,456.72 = 1,385.86/x
3. Step 3: Cross multiply
   2,504.94x = 3,456.72 × 1,385.86
4. Step 4: Simplify right side
   2,504.94x = 4,790,529.98
5. Step 5: Solve for x
   x = 4,790,529.98/2,504.94
6. Step 6: Final answer
   x = 1,912.43