Finding the Fourth Proportional to 1,208.16, 1,802.01 and 1,171.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,208.16 : 1,802.01 = 1,171.72 : x
2. Step 2: Convert to fraction form
   1,208.16/1,802.01 = 1,171.72/x
3. Step 3: Cross multiply
   1,208.16x = 1,802.01 × 1,171.72
4. Step 4: Simplify right side
   1,208.16x = 2,111,451.16
5. Step 5: Solve for x
   x = 2,111,451.16/1,208.16
6. Step 6: Final answer
   x = 1,747.66