Finding the Fourth Proportional to 1,500.69, 2,251.68 and 806.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,500.69 : 2,251.68 = 806.55 : x
2. Step 2: Convert to fraction form
   1,500.69/2,251.68 = 806.55/x
3. Step 3: Cross multiply
   1,500.69x = 2,251.68 × 806.55
4. Step 4: Simplify right side
   1,500.69x = 1,816,092.50
5. Step 5: Solve for x
   x = 1,816,092.50/1,500.69
6. Step 6: Final answer
   x = 1,210.17