Finding the Fourth Proportional to 1,979.89, 2,734.41 and 1,319.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,979.89 : 2,734.41 = 1,319.55 : x
2. Step 2: Convert to fraction form
   1,979.89/2,734.41 = 1,319.55/x
3. Step 3: Cross multiply
   1,979.89x = 2,734.41 × 1,319.55
4. Step 4: Simplify right side
   1,979.89x = 3,608,190.72
5. Step 5: Solve for x
   x = 3,608,190.72/1,979.89
6. Step 6: Final answer
   x = 1,822.42