Finding the Fourth Proportional to 2,188.04, 3,020.61 and 1,689.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.04 : 3,020.61 = 1,689.56 : x
2. Step 2: Convert to fraction form
   2,188.04/3,020.61 = 1,689.56/x
3. Step 3: Cross multiply
   2,188.04x = 3,020.61 × 1,689.56
4. Step 4: Simplify right side
   2,188.04x = 5,103,501.83
5. Step 5: Solve for x
   x = 5,103,501.83/2,188.04
6. Step 6: Final answer
   x = 2,332.45