Finding the Fourth Proportional to 2,072.48, 2,860.25 and 1,188.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,072.48 : 2,860.25 = 1,188.27 : x
2. Step 2: Convert to fraction form
   2,072.48/2,860.25 = 1,188.27/x
3. Step 3: Cross multiply
   2,072.48x = 2,860.25 × 1,188.27
4. Step 4: Simplify right side
   2,072.48x = 3,398,743.33
5. Step 5: Solve for x
   x = 3,398,743.33/2,072.48
6. Step 6: Final answer
   x = 1,639.94