Finding the Fourth Proportional to 2,089.30, 2,883.73 and 1,381.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,089.30 : 2,883.73 = 1,381.28 : x
2. Step 2: Convert to fraction form
   2,089.30/2,883.73 = 1,381.28/x
3. Step 3: Cross multiply
   2,089.30x = 2,883.73 × 1,381.28
4. Step 4: Simplify right side
   2,089.30x = 3,983,238.57
5. Step 5: Solve for x
   x = 3,983,238.57/2,089.30
6. Step 6: Final answer
   x = 1,906.49