Finding the Fourth Proportional to 2,820.15, 4,226.31 and 1,357.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,820.15 : 4,226.31 = 1,357.29 : x
2. Step 2: Convert to fraction form
   2,820.15/4,226.31 = 1,357.29/x
3. Step 3: Cross multiply
   2,820.15x = 4,226.31 × 1,357.29
4. Step 4: Simplify right side
   2,820.15x = 5,736,328.30
5. Step 5: Solve for x
   x = 5,736,328.30/2,820.15
6. Step 6: Final answer
   x = 2,034.05