Finding the Fourth Proportional to 2,540.50, 3,507.33 and 1,918.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540.50 : 3,507.33 = 1,918.42 : x
2. Step 2: Convert to fraction form
   2,540.50/3,507.33 = 1,918.42/x
3. Step 3: Cross multiply
   2,540.50x = 3,507.33 × 1,918.42
4. Step 4: Simplify right side
   2,540.50x = 6,728,532.02
5. Step 5: Solve for x
   x = 6,728,532.02/2,540.50
6. Step 6: Final answer
   x = 2,648.51