Finding the Fourth Proportional to 1,190.73, 1,785.48 and 800.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,190.73 : 1,785.48 = 800.72 : x
2. Step 2: Convert to fraction form
   1,190.73/1,785.48 = 800.72/x
3. Step 3: Cross multiply
   1,190.73x = 1,785.48 × 800.72
4. Step 4: Simplify right side
   1,190.73x = 1,429,664.31
5. Step 5: Solve for x
   x = 1,429,664.31/1,190.73
6. Step 6: Final answer
   x = 1,200.66