Finding the Fourth Proportional to 2,504.50, 3,456.24 and 1,385.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,504.50 : 3,456.24 = 1,385.53 : x
2. Step 2: Convert to fraction form
   2,504.50/3,456.24 = 1,385.53/x
3. Step 3: Cross multiply
   2,504.50x = 3,456.24 × 1,385.53
4. Step 4: Simplify right side
   2,504.50x = 4,788,724.21
5. Step 5: Solve for x
   x = 4,788,724.21/2,504.50
6. Step 6: Final answer
   x = 1,912.05