Finding the Fourth Proportional to 2,665.59, 3,678.87 and 1,617.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.59 : 3,678.87 = 1,617.67 : x
2. Step 2: Convert to fraction form
   2,665.59/3,678.87 = 1,617.67/x
3. Step 3: Cross multiply
   2,665.59x = 3,678.87 × 1,617.67
4. Step 4: Simplify right side
   2,665.59x = 5,951,197.63
5. Step 5: Solve for x
   x = 5,951,197.63/2,665.59
6. Step 6: Final answer
   x = 2,232.60