Finding the Fourth Proportional to 2,504.48, 3,456.12 and 1,385.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,504.48 : 3,456.12 = 1,385.48 : x
2. Step 2: Convert to fraction form
   2,504.48/3,456.12 = 1,385.48/x
3. Step 3: Cross multiply
   2,504.48x = 3,456.12 × 1,385.48
4. Step 4: Simplify right side
   2,504.48x = 4,788,385.14
5. Step 5: Solve for x
   x = 4,788,385.14/2,504.48
6. Step 6: Final answer
   x = 1,911.93