Finding the Fourth Proportional to 2,665.68, 3,678.72 and 1,486.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.68 : 3,678.72 = 1,486.80 : x
2. Step 2: Convert to fraction form
   2,665.68/3,678.72 = 1,486.80/x
3. Step 3: Cross multiply
   2,665.68x = 3,678.72 × 1,486.80
4. Step 4: Simplify right side
   2,665.68x = 5,469,520.90
5. Step 5: Solve for x
   x = 5,469,520.90/2,665.68
6. Step 6: Final answer
   x = 2,051.83