Finding the Fourth Proportional to 2,178.65, 3,007.58 and 1,550.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,178.65 : 3,007.58 = 1,550.49 : x
2. Step 2: Convert to fraction form
   2,178.65/3,007.58 = 1,550.49/x
3. Step 3: Cross multiply
   2,178.65x = 3,007.58 × 1,550.49
4. Step 4: Simplify right side
   2,178.65x = 4,663,222.71
5. Step 5: Solve for x
   x = 4,663,222.71/2,178.65
6. Step 6: Final answer
   x = 2,140.42