Finding the Fourth Proportional to 2,284.82, 3,152.87 and 1,290.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,284.82 : 3,152.87 = 1,290.18 : x
2. Step 2: Convert to fraction form
   2,284.82/3,152.87 = 1,290.18/x
3. Step 3: Cross multiply
   2,284.82x = 3,152.87 × 1,290.18
4. Step 4: Simplify right side
   2,284.82x = 4,067,768.20
5. Step 5: Solve for x
   x = 4,067,768.20/2,284.82
6. Step 6: Final answer
   x = 1,780.35