Finding the Fourth Proportional to 2,553.34, 3,520.38 and 1,667.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,553.34 : 3,520.38 = 1,667.74 : x
2. Step 2: Convert to fraction form
   2,553.34/3,520.38 = 1,667.74/x
3. Step 3: Cross multiply
   2,553.34x = 3,520.38 × 1,667.74
4. Step 4: Simplify right side
   2,553.34x = 5,871,078.54
5. Step 5: Solve for x
   x = 5,871,078.54/2,553.34
6. Step 6: Final answer
   x = 2,299.37