Finding the Fourth Proportional to 2,259.05, 3,119.41 and 1,421.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,259.05 : 3,119.41 = 1,421.15 : x
2. Step 2: Convert to fraction form
   2,259.05/3,119.41 = 1,421.15/x
3. Step 3: Cross multiply
   2,259.05x = 3,119.41 × 1,421.15
4. Step 4: Simplify right side
   2,259.05x = 4,433,155.54
5. Step 5: Solve for x
   x = 4,433,155.54/2,259.05
6. Step 6: Final answer
   x = 1,962.40