Finding the Fourth Proportional to 2,089.31, 2,883.24 and 1,238.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,089.31 : 2,883.24 = 1,238.58 : x
2. Step 2: Convert to fraction form
   2,089.31/2,883.24 = 1,238.58/x
3. Step 3: Cross multiply
   2,089.31x = 2,883.24 × 1,238.58
4. Step 4: Simplify right side
   2,089.31x = 3,571,123.40
5. Step 5: Solve for x
   x = 3,571,123.40/2,089.31
6. Step 6: Final answer
   x = 1,709.24