Finding the Fourth Proportional to 2,665.50, 3,678.39 and 1,486.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.50 : 3,678.39 = 1,486.65 : x
2. Step 2: Convert to fraction form
   2,665.50/3,678.39 = 1,486.65/x
3. Step 3: Cross multiply
   2,665.50x = 3,678.39 × 1,486.65
4. Step 4: Simplify right side
   2,665.50x = 5,468,478.49
5. Step 5: Solve for x
   x = 5,468,478.49/2,665.50
6. Step 6: Final answer
   x = 2,051.58