Finding the Fourth Proportional to 2,072.54, 2,860.07 and 1,188.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,072.54 : 2,860.07 = 1,188.29 : x
2. Step 2: Convert to fraction form
   2,072.54/2,860.07 = 1,188.29/x
3. Step 3: Cross multiply
   2,072.54x = 2,860.07 × 1,188.29
4. Step 4: Simplify right side
   2,072.54x = 3,398,575.31
5. Step 5: Solve for x
   x = 3,398,575.31/2,072.54
6. Step 6: Final answer
   x = 1,639.82