Finding the Fourth Proportional to 2,551.52, 3,520.32 and 1,667

Step by Step Solution

1. Step 1: Write the proportion equation
   2,551.52 : 3,520.32 = 1,667 : x
2. Step 2: Convert to fraction form
   2,551.52/3,520.32 = 1,667/x
3. Step 3: Cross multiply
   2,551.52x = 3,520.32 × 1,667
4. Step 4: Simplify right side
   2,551.52x = 5,868,373.44
5. Step 5: Solve for x
   x = 5,868,373.44/2,551.52
6. Step 6: Final answer
   x = 2,299.95