Finding the Fourth Proportional to 2,003.80, 3,002.78 and 1,488.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.80 : 3,002.78 = 1,488.28 : x
2. Step 2: Convert to fraction form
   2,003.80/3,002.78 = 1,488.28/x
3. Step 3: Cross multiply
   2,003.80x = 3,002.78 × 1,488.28
4. Step 4: Simplify right side
   2,003.80x = 4,468,977.42
5. Step 5: Solve for x
   x = 4,468,977.42/2,003.80
6. Step 6: Final answer
   x = 2,230.25