Finding the Fourth Proportional to 1,147.94, 1,581.69 and 798.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,147.94 : 1,581.69 = 798.02 : x
2. Step 2: Convert to fraction form
   1,147.94/1,581.69 = 798.02/x
3. Step 3: Cross multiply
   1,147.94x = 1,581.69 × 798.02
4. Step 4: Simplify right side
   1,147.94x = 1,262,220.25
5. Step 5: Solve for x
   x = 1,262,220.25/1,147.94
6. Step 6: Final answer
   x = 1,099.55