Finding the Fourth Proportional to 2,540.07, 3,505.50 and 1,421.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540.07 : 3,505.50 = 1,421.37 : x
2. Step 2: Convert to fraction form
   2,540.07/3,505.50 = 1,421.37/x
3. Step 3: Cross multiply
   2,540.07x = 3,505.50 × 1,421.37
4. Step 4: Simplify right side
   2,540.07x = 4,982,612.54
5. Step 5: Solve for x
   x = 4,982,612.54/2,540.07
6. Step 6: Final answer
   x = 1,961.60