Finding the Fourth Proportional to 2,101.78, 3,152.79 and 1,608.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.78 : 3,152.79 = 1,608.88 : x
2. Step 2: Convert to fraction form
   2,101.78/3,152.79 = 1,608.88/x
3. Step 3: Cross multiply
   2,101.78x = 3,152.79 × 1,608.88
4. Step 4: Simplify right side
   2,101.78x = 5,072,460.78
5. Step 5: Solve for x
   x = 5,072,460.78/2,101.78
6. Step 6: Final answer
   x = 2,413.41