Finding the Fourth Proportional to 2,159.82, 3,238.86 and 926.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,159.82 : 3,238.86 = 926.58 : x
2. Step 2: Convert to fraction form
   2,159.82/3,238.86 = 926.58/x
3. Step 3: Cross multiply
   2,159.82x = 3,238.86 × 926.58
4. Step 4: Simplify right side
   2,159.82x = 3,001,062.90
5. Step 5: Solve for x
   x = 3,001,062.90/2,159.82
6. Step 6: Final answer
   x = 1,389.50