Finding the Fourth Proportional to 1,463.72, 2,019.90 and 800.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,463.72 : 2,019.90 = 800.55 : x
2. Step 2: Convert to fraction form
   1,463.72/2,019.90 = 800.55/x
3. Step 3: Cross multiply
   1,463.72x = 2,019.90 × 800.55
4. Step 4: Simplify right side
   1,463.72x = 1,617,033.95
5. Step 5: Solve for x
   x = 1,617,033.95/1,463.72
6. Step 6: Final answer
   x = 1,104.74