Finding the Fourth Proportional to 2,039.72, 2,793.72 and 1,920.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.72 : 2,793.72 = 1,920.03 : x
2. Step 2: Convert to fraction form
   2,039.72/2,793.72 = 1,920.03/x
3. Step 3: Cross multiply
   2,039.72x = 2,793.72 × 1,920.03
4. Step 4: Simplify right side
   2,039.72x = 5,364,026.21
5. Step 5: Solve for x
   x = 5,364,026.21/2,039.72
6. Step 6: Final answer
   x = 2,629.79