Finding the Fourth Proportional to 2,820.82, 4,231.32 and 1,359.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,820.82 : 4,231.32 = 1,359.22 : x
2. Step 2: Convert to fraction form
   2,820.82/4,231.32 = 1,359.22/x
3. Step 3: Cross multiply
   2,820.82x = 4,231.32 × 1,359.22
4. Step 4: Simplify right side
   2,820.82x = 5,751,294.77
5. Step 5: Solve for x
   x = 5,751,294.77/2,820.82
6. Step 6: Final answer
   x = 2,038.87