Finding the Fourth Proportional to 2,189.32, 3,020.52 and 1,338.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.32 : 3,020.52 = 1,338.26 : x
2. Step 2: Convert to fraction form
   2,189.32/3,020.52 = 1,338.26/x
3. Step 3: Cross multiply
   2,189.32x = 3,020.52 × 1,338.26
4. Step 4: Simplify right side
   2,189.32x = 4,042,241.10
5. Step 5: Solve for x
   x = 4,042,241.10/2,189.32
6. Step 6: Final answer
   x = 1,846.35