Finding the Fourth Proportional to 2,540.79, 3,811.23 and 897.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540.79 : 3,811.23 = 897.35 : x
2. Step 2: Convert to fraction form
   2,540.79/3,811.23 = 897.35/x
3. Step 3: Cross multiply
   2,540.79x = 3,811.23 × 897.35
4. Step 4: Simplify right side
   2,540.79x = 3,420,017.82
5. Step 5: Solve for x
   x = 3,420,017.82/2,540.79
6. Step 6: Final answer
   x = 1,346.04