Finding the Fourth Proportional to 2,189.44, 3,284.78 and 802.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.44 : 3,284.78 = 802.72 : x
2. Step 2: Convert to fraction form
   2,189.44/3,284.78 = 802.72/x
3. Step 3: Cross multiply
   2,189.44x = 3,284.78 × 802.72
4. Step 4: Simplify right side
   2,189.44x = 2,636,758.60
5. Step 5: Solve for x
   x = 2,636,758.60/2,189.44
6. Step 6: Final answer
   x = 1,204.31