Finding the Fourth Proportional to 2,504.56, 3,456.48 and 1,385.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,504.56 : 3,456.48 = 1,385.68 : x
2. Step 2: Convert to fraction form
   2,504.56/3,456.48 = 1,385.68/x
3. Step 3: Cross multiply
   2,504.56x = 3,456.48 × 1,385.68
4. Step 4: Simplify right side
   2,504.56x = 4,789,575.21
5. Step 5: Solve for x
   x = 4,789,575.21/2,504.56
6. Step 6: Final answer
   x = 1,912.34