Finding the Fourth Proportional to 3,859.92, 5,788.51 and 1,667.45

Step by Step Solution

1. Step 1: Write the proportion equation
   3,859.92 : 5,788.51 = 1,667.45 : x
2. Step 2: Convert to fraction form
   3,859.92/5,788.51 = 1,667.45/x
3. Step 3: Cross multiply
   3,859.92x = 5,788.51 × 1,667.45
4. Step 4: Simplify right side
   3,859.92x = 9,652,061.30
5. Step 5: Solve for x
   x = 9,652,061.30/3,859.92
6. Step 6: Final answer
   x = 2,500.59