Finding the Fourth Proportional to 2,189.17, 3,281.49 and 1,667.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.17 : 3,281.49 = 1,667.71 : x
2. Step 2: Convert to fraction form
   2,189.17/3,281.49 = 1,667.71/x
3. Step 3: Cross multiply
   2,189.17x = 3,281.49 × 1,667.71
4. Step 4: Simplify right side
   2,189.17x = 5,472,573.69
5. Step 5: Solve for x
   x = 5,472,573.69/2,189.17
6. Step 6: Final answer
   x = 2,499.84