Finding the Fourth Proportional to 2,939.12, 4,408.86 and 1,065.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,939.12 : 4,408.86 = 1,065.42 : x
2. Step 2: Convert to fraction form
   2,939.12/4,408.86 = 1,065.42/x
3. Step 3: Cross multiply
   2,939.12x = 4,408.86 × 1,065.42
4. Step 4: Simplify right side
   2,939.12x = 4,697,282.29
5. Step 5: Solve for x
   x = 4,697,282.29/2,939.12
6. Step 6: Final answer
   x = 1,598.19