Finding the Fourth Proportional to 2,003.31, 3,003.83 and 906.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.31 : 3,003.83 = 906.63 : x
2. Step 2: Convert to fraction form
   2,003.31/3,003.83 = 906.63/x
3. Step 3: Cross multiply
   2,003.31x = 3,003.83 × 906.63
4. Step 4: Simplify right side
   2,003.31x = 2,723,357.86
5. Step 5: Solve for x
   x = 2,723,357.86/2,003.31
6. Step 6: Final answer
   x = 1,359.43