Finding the Fourth Proportional to 2,284.83, 3,153.06 and 1,290.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,284.83 : 3,153.06 = 1,290.36 : x
2. Step 2: Convert to fraction form
   2,284.83/3,153.06 = 1,290.36/x
3. Step 3: Cross multiply
   2,284.83x = 3,153.06 × 1,290.36
4. Step 4: Simplify right side
   2,284.83x = 4,068,582.50
5. Step 5: Solve for x
   x = 4,068,582.50/2,284.83
6. Step 6: Final answer
   x = 1,780.69