Finding the Fourth Proportional to 2,507.69, 3,458.07 and 1,667.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,507.69 : 3,458.07 = 1,667.31 : x
2. Step 2: Convert to fraction form
   2,507.69/3,458.07 = 1,667.31/x
3. Step 3: Cross multiply
   2,507.69x = 3,458.07 × 1,667.31
4. Step 4: Simplify right side
   2,507.69x = 5,765,674.69
5. Step 5: Solve for x
   x = 5,765,674.69/2,507.69
6. Step 6: Final answer
   x = 2,299.20