Finding the Fourth Proportional to 2,779.33, 4,171.05 and 2,238.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,779.33 : 4,171.05 = 2,238.05 : x
2. Step 2: Convert to fraction form
   2,779.33/4,171.05 = 2,238.05/x
3. Step 3: Cross multiply
   2,779.33x = 4,171.05 × 2,238.05
4. Step 4: Simplify right side
   2,779.33x = 9,335,012.86
5. Step 5: Solve for x
   x = 9,335,012.86/2,779.33
6. Step 6: Final answer
   x = 3,358.72