Finding the Fourth Proportional to 2,190.50, 3,283.72 and 803.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,190.50 : 3,283.72 = 803.51 : x
2. Step 2: Convert to fraction form
   2,190.50/3,283.72 = 803.51/x
3. Step 3: Cross multiply
   2,190.50x = 3,283.72 × 803.51
4. Step 4: Simplify right side
   2,190.50x = 2,638,483.43
5. Step 5: Solve for x
   x = 2,638,483.43/2,190.50
6. Step 6: Final answer
   x = 1,204.51