Finding the Fourth Proportional to 2,540.84, 3,810.57 and 897.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540.84 : 3,810.57 = 897.17 : x
2. Step 2: Convert to fraction form
   2,540.84/3,810.57 = 897.17/x
3. Step 3: Cross multiply
   2,540.84x = 3,810.57 × 897.17
4. Step 4: Simplify right side
   2,540.84x = 3,418,710.03
5. Step 5: Solve for x
   x = 3,418,710.03/2,540.84
6. Step 6: Final answer
   x = 1,345.51