Finding the Fourth Proportional to 2,540.47, 3,505.94 and 1,421.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540.47 : 3,505.94 = 1,421.46 : x
2. Step 2: Convert to fraction form
   2,540.47/3,505.94 = 1,421.46/x
3. Step 3: Cross multiply
   2,540.47x = 3,505.94 × 1,421.46
4. Step 4: Simplify right side
   2,540.47x = 4,983,528.84
5. Step 5: Solve for x
   x = 4,983,528.84/2,540.47
6. Step 6: Final answer
   x = 1,961.66