Finding the Fourth Proportional to 1,667.68, 2,487 and 1,481.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.68 : 2,487 = 1,481.20 : x
2. Step 2: Convert to fraction form
   1,667.68/2,487 = 1,481.20/x
3. Step 3: Cross multiply
   1,667.68x = 2,487 × 1,481.20
4. Step 4: Simplify right side
   1,667.68x = 3,683,744.40
5. Step 5: Solve for x
   x = 3,683,744.40/1,667.68
6. Step 6: Final answer
   x = 2,208.90