Finding the Fourth Proportional to 1,200.17, 1,797.50 and 1,079.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.17 : 1,797.50 = 1,079.88 : x
2. Step 2: Convert to fraction form
   1,200.17/1,797.50 = 1,079.88/x
3. Step 3: Cross multiply
   1,200.17x = 1,797.50 × 1,079.88
4. Step 4: Simplify right side
   1,200.17x = 1,941,078.90
5. Step 5: Solve for x
   x = 1,941,078.90/1,200.17
6. Step 6: Final answer
   x = 1,617.34