Finding the Fourth Proportional to 2,504.37, 3,455.97 and 1,385.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,504.37 : 3,455.97 = 1,385.43 : x
2. Step 2: Convert to fraction form
   2,504.37/3,455.97 = 1,385.43/x
3. Step 3: Cross multiply
   2,504.37x = 3,455.97 × 1,385.43
4. Step 4: Simplify right side
   2,504.37x = 4,788,004.52
5. Step 5: Solve for x
   x = 4,788,004.52/2,504.37
6. Step 6: Final answer
   x = 1,911.86