Finding the Fourth Proportional to 2,739.16, 4,105.78 and 1,421.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,739.16 : 4,105.78 = 1,421.58 : x
2. Step 2: Convert to fraction form
   2,739.16/4,105.78 = 1,421.58/x
3. Step 3: Cross multiply
   2,739.16x = 4,105.78 × 1,421.58
4. Step 4: Simplify right side
   2,739.16x = 5,836,694.73
5. Step 5: Solve for x
   x = 5,836,694.73/2,739.16
6. Step 6: Final answer
   x = 2,130.83