Finding the Fourth Proportional to 3,919.22, 5,878.53 and 1,839.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,919.22 : 5,878.53 = 1,839.69 : x
2. Step 2: Convert to fraction form
   3,919.22/5,878.53 = 1,839.69/x
3. Step 3: Cross multiply
   3,919.22x = 5,878.53 × 1,839.69
4. Step 4: Simplify right side
   3,919.22x = 10,814,672.86
5. Step 5: Solve for x
   x = 10,814,672.86/3,919.22
6. Step 6: Final answer
   x = 2,759.40