Finding the Fourth Proportional to 2,107.82, 3,164.47 and 1,621.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,107.82 : 3,164.47 = 1,621.22 : x
2. Step 2: Convert to fraction form
   2,107.82/3,164.47 = 1,621.22/x
3. Step 3: Cross multiply
   2,107.82x = 3,164.47 × 1,621.22
4. Step 4: Simplify right side
   2,107.82x = 5,130,282.18
5. Step 5: Solve for x
   x = 5,130,282.18/2,107.82
6. Step 6: Final answer
   x = 2,433.93