Finding the Fourth Proportional to 2,665.59, 3,678.51 and 1,486.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.59 : 3,678.51 = 1,486.65 : x
2. Step 2: Convert to fraction form
   2,665.59/3,678.51 = 1,486.65/x
3. Step 3: Cross multiply
   2,665.59x = 3,678.51 × 1,486.65
4. Step 4: Simplify right side
   2,665.59x = 5,468,656.89
5. Step 5: Solve for x
   x = 5,468,656.89/2,665.59
6. Step 6: Final answer
   x = 2,051.57