Finding the Fourth Proportional to 2,540.54, 3,810.71 and 897.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540.54 : 3,810.71 = 897.10 : x
2. Step 2: Convert to fraction form
   2,540.54/3,810.71 = 897.10/x
3. Step 3: Cross multiply
   2,540.54x = 3,810.71 × 897.10
4. Step 4: Simplify right side
   2,540.54x = 3,418,587.94
5. Step 5: Solve for x
   x = 3,418,587.94/2,540.54
6. Step 6: Final answer
   x = 1,345.61