Finding the Fourth Proportional to 2,674.78, 3,691.47 and 1,680.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,674.78 : 3,691.47 = 1,680.82 : x
2. Step 2: Convert to fraction form
   2,674.78/3,691.47 = 1,680.82/x
3. Step 3: Cross multiply
   2,674.78x = 3,691.47 × 1,680.82
4. Step 4: Simplify right side
   2,674.78x = 6,204,696.61
5. Step 5: Solve for x
   x = 6,204,696.61/2,674.78
6. Step 6: Final answer
   x = 2,319.70