Finding the Fourth Proportional to 2,190.37, 3,284.52 and 802.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,190.37 : 3,284.52 = 802.72 : x
2. Step 2: Convert to fraction form
   2,190.37/3,284.52 = 802.72/x
3. Step 3: Cross multiply
   2,190.37x = 3,284.52 × 802.72
4. Step 4: Simplify right side
   2,190.37x = 2,636,549.89
5. Step 5: Solve for x
   x = 2,636,549.89/2,190.37
6. Step 6: Final answer
   x = 1,203.70