Finding the Fourth Proportional to 1,289.31, 1,933.89 and 741.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,289.31 : 1,933.89 = 741.09 : x
2. Step 2: Convert to fraction form
   1,289.31/1,933.89 = 741.09/x
3. Step 3: Cross multiply
   1,289.31x = 1,933.89 × 741.09
4. Step 4: Simplify right side
   1,289.31x = 1,433,186.54
5. Step 5: Solve for x
   x = 1,433,186.54/1,289.31
6. Step 6: Final answer
   x = 1,111.59