Finding the Fourth Proportional to 2,740.68, 4,111.63 and 1,279.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,740.68 : 4,111.63 = 1,279.04 : x
2. Step 2: Convert to fraction form
   2,740.68/4,111.63 = 1,279.04/x
3. Step 3: Cross multiply
   2,740.68x = 4,111.63 × 1,279.04
4. Step 4: Simplify right side
   2,740.68x = 5,258,915.48
5. Step 5: Solve for x
   x = 5,258,915.48/2,740.68
6. Step 6: Final answer
   x = 1,918.84