Finding the Fourth Proportional to 2,284.70, 3,152.82 and 1,290.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,284.70 : 3,152.82 = 1,290.07 : x
2. Step 2: Convert to fraction form
   2,284.70/3,152.82 = 1,290.07/x
3. Step 3: Cross multiply
   2,284.70x = 3,152.82 × 1,290.07
4. Step 4: Simplify right side
   2,284.70x = 4,067,358.50
5. Step 5: Solve for x
   x = 4,067,358.50/2,284.70
6. Step 6: Final answer
   x = 1,780.26