Finding the Fourth Proportional to 1,333.20, 1,839.94 and 743.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.20 : 1,839.94 = 743.78 : x
2. Step 2: Convert to fraction form
   1,333.20/1,839.94 = 743.78/x
3. Step 3: Cross multiply
   1,333.20x = 1,839.94 × 743.78
4. Step 4: Simplify right side
   1,333.20x = 1,368,510.57
5. Step 5: Solve for x
   x = 1,368,510.57/1,333.20
6. Step 6: Final answer
   x = 1,026.49