Finding the Fourth Proportional to 2,458.73, 3,688.78 and 1,072.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,458.73 : 3,688.78 = 1,072.19 : x
2. Step 2: Convert to fraction form
   2,458.73/3,688.78 = 1,072.19/x
3. Step 3: Cross multiply
   2,458.73x = 3,688.78 × 1,072.19
4. Step 4: Simplify right side
   2,458.73x = 3,955,074.22
5. Step 5: Solve for x
   x = 3,955,074.22/2,458.73
6. Step 6: Final answer
   x = 1,608.58