Finding the Fourth Proportional to 2,120.22, 3,181.41 and 1,603.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,120.22 : 3,181.41 = 1,603.37 : x
2. Step 2: Convert to fraction form
   2,120.22/3,181.41 = 1,603.37/x
3. Step 3: Cross multiply
   2,120.22x = 3,181.41 × 1,603.37
4. Step 4: Simplify right side
   2,120.22x = 5,100,985.31
5. Step 5: Solve for x
   x = 5,100,985.31/2,120.22
6. Step 6: Final answer
   x = 2,405.88