Finding the Fourth Proportional to 2,540.67, 3,810.90 and 897.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540.67 : 3,810.90 = 897.23 : x
2. Step 2: Convert to fraction form
   2,540.67/3,810.90 = 897.23/x
3. Step 3: Cross multiply
   2,540.67x = 3,810.90 × 897.23
4. Step 4: Simplify right side
   2,540.67x = 3,419,253.81
5. Step 5: Solve for x
   x = 3,419,253.81/2,540.67
6. Step 6: Final answer
   x = 1,345.81