Finding the Fourth Proportional to 2,003.73, 2,990.28 and 1,785.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.73 : 2,990.28 = 1,785.03 : x
2. Step 2: Convert to fraction form
   2,003.73/2,990.28 = 1,785.03/x
3. Step 3: Cross multiply
   2,003.73x = 2,990.28 × 1,785.03
4. Step 4: Simplify right side
   2,003.73x = 5,337,739.51
5. Step 5: Solve for x
   x = 5,337,739.51/2,003.73
6. Step 6: Final answer
   x = 2,663.90