Finding the Fourth Proportional to 2,504.58, 3,456.29 and 1,385.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,504.58 : 3,456.29 = 1,385.55 : x
2. Step 2: Convert to fraction form
   2,504.58/3,456.29 = 1,385.55/x
3. Step 3: Cross multiply
   2,504.58x = 3,456.29 × 1,385.55
4. Step 4: Simplify right side
   2,504.58x = 4,788,855.68
5. Step 5: Solve for x
   x = 4,788,855.68/2,504.58
6. Step 6: Final answer
   x = 1,912.04