Finding the Fourth Proportional to 2,109.08, 3,158.71 and 1,667.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.08 : 3,158.71 = 1,667.37 : x
2. Step 2: Convert to fraction form
   2,109.08/3,158.71 = 1,667.37/x
3. Step 3: Cross multiply
   2,109.08x = 3,158.71 × 1,667.37
4. Step 4: Simplify right side
   2,109.08x = 5,266,734.12
5. Step 5: Solve for x
   x = 5,266,734.12/2,109.08
6. Step 6: Final answer
   x = 2,497.17