Finding the Fourth Proportional to 2,178.59, 3,004.38 and 1,680.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,178.59 : 3,004.38 = 1,680.44 : x
2. Step 2: Convert to fraction form
   2,178.59/3,004.38 = 1,680.44/x
3. Step 3: Cross multiply
   2,178.59x = 3,004.38 × 1,680.44
4. Step 4: Simplify right side
   2,178.59x = 5,048,665.31
5. Step 5: Solve for x
   x = 5,048,665.31/2,178.59
6. Step 6: Final answer
   x = 2,317.41