Finding the Fourth Proportional to 2,189.04, 3,021.99 and 1,690.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.04 : 3,021.99 = 1,690.56 : x
2. Step 2: Convert to fraction form
   2,189.04/3,021.99 = 1,690.56/x
3. Step 3: Cross multiply
   2,189.04x = 3,021.99 × 1,690.56
4. Step 4: Simplify right side
   2,189.04x = 5,108,855.41
5. Step 5: Solve for x
   x = 5,108,855.41/2,189.04
6. Step 6: Final answer
   x = 2,333.83