Finding the Fourth Proportional to 1,838.23, 2,759.31 and 743.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,838.23 : 2,759.31 = 743.31 : x
2. Step 2: Convert to fraction form
   1,838.23/2,759.31 = 743.31/x
3. Step 3: Cross multiply
   1,838.23x = 2,759.31 × 743.31
4. Step 4: Simplify right side
   1,838.23x = 2,051,022.72
5. Step 5: Solve for x
   x = 2,051,022.72/1,838.23
6. Step 6: Final answer
   x = 1,115.76