Finding the Fourth Proportional to 2,029.59, 2,799.76 and 1,399.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,029.59 : 2,799.76 = 1,399.02 : x
2. Step 2: Convert to fraction form
   2,029.59/2,799.76 = 1,399.02/x
3. Step 3: Cross multiply
   2,029.59x = 2,799.76 × 1,399.02
4. Step 4: Simplify right side
   2,029.59x = 3,916,920.24
5. Step 5: Solve for x
   x = 3,916,920.24/2,029.59
6. Step 6: Final answer
   x = 1,929.91