Finding the Fourth Proportional to 2,815.06, 4,216.24 and 1,355.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,815.06 : 4,216.24 = 1,355.31 : x
2. Step 2: Convert to fraction form
   2,815.06/4,216.24 = 1,355.31/x
3. Step 3: Cross multiply
   2,815.06x = 4,216.24 × 1,355.31
4. Step 4: Simplify right side
   2,815.06x = 5,714,312.23
5. Step 5: Solve for x
   x = 5,714,312.23/2,815.06
6. Step 6: Final answer
   x = 2,029.91