Finding the Fourth Proportional to 2,504.55, 3,456.17 and 1,385.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,504.55 : 3,456.17 = 1,385.51 : x
2. Step 2: Convert to fraction form
   2,504.55/3,456.17 = 1,385.51/x
3. Step 3: Cross multiply
   2,504.55x = 3,456.17 × 1,385.51
4. Step 4: Simplify right side
   2,504.55x = 4,788,539.08
5. Step 5: Solve for x
   x = 4,788,539.08/2,504.55
6. Step 6: Final answer
   x = 1,911.93