Finding the Fourth Proportional to 2,673.35, 3,686.82 and 1,678.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,673.35 : 3,686.82 = 1,678.71 : x
2. Step 2: Convert to fraction form
   2,673.35/3,686.82 = 1,678.71/x
3. Step 3: Cross multiply
   2,673.35x = 3,686.82 × 1,678.71
4. Step 4: Simplify right side
   2,673.35x = 6,189,101.60
5. Step 5: Solve for x
   x = 6,189,101.60/2,673.35
6. Step 6: Final answer
   x = 2,315.12