Finding the Fourth Proportional to 2,673.80, 3,689.75 and 1,478.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,673.80 : 3,689.75 = 1,478.71 : x
2. Step 2: Convert to fraction form
   2,673.80/3,689.75 = 1,478.71/x
3. Step 3: Cross multiply
   2,673.80x = 3,689.75 × 1,478.71
4. Step 4: Simplify right side
   2,673.80x = 5,456,053.60
5. Step 5: Solve for x
   x = 5,456,053.60/2,673.80
6. Step 6: Final answer
   x = 2,040.57