Finding the Fourth Proportional to 1,578.27, 2,368.38 and 1,072.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,578.27 : 2,368.38 = 1,072.22 : x
2. Step 2: Convert to fraction form
   1,578.27/2,368.38 = 1,072.22/x
3. Step 3: Cross multiply
   1,578.27x = 2,368.38 × 1,072.22
4. Step 4: Simplify right side
   1,578.27x = 2,539,424.40
5. Step 5: Solve for x
   x = 2,539,424.40/1,578.27
6. Step 6: Final answer
   x = 1,608.99