Finding the Fourth Proportional to 1,867.98, 2,581.11 and 1,478.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,867.98 : 2,581.11 = 1,478.10 : x
2. Step 2: Convert to fraction form
   1,867.98/2,581.11 = 1,478.10/x
3. Step 3: Cross multiply
   1,867.98x = 2,581.11 × 1,478.10
4. Step 4: Simplify right side
   1,867.98x = 3,815,138.69
5. Step 5: Solve for x
   x = 3,815,138.69/1,867.98
6. Step 6: Final answer
   x = 2,042.39