Finding the Fourth Proportional to 1,333.31, 1,839.78 and 743.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.31 : 1,839.78 = 743.76 : x
2. Step 2: Convert to fraction form
   1,333.31/1,839.78 = 743.76/x
3. Step 3: Cross multiply
   1,333.31x = 1,839.78 × 743.76
4. Step 4: Simplify right side
   1,333.31x = 1,368,354.77
5. Step 5: Solve for x
   x = 1,368,354.77/1,333.31
6. Step 6: Final answer
   x = 1,026.28