Finding the Fourth Proportional to 2,799.31, 4,192.57 and 1,339.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,799.31 : 4,192.57 = 1,339.49 : x
2. Step 2: Convert to fraction form
   2,799.31/4,192.57 = 1,339.49/x
3. Step 3: Cross multiply
   2,799.31x = 4,192.57 × 1,339.49
4. Step 4: Simplify right side
   2,799.31x = 5,615,905.59
5. Step 5: Solve for x
   x = 5,615,905.59/2,799.31
6. Step 6: Final answer
   x = 2,006.17