Finding the Fourth Proportional to 1,191.30, 1,644.79 and 743.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,191.30 : 1,644.79 = 743.34 : x
2. Step 2: Convert to fraction form
   1,191.30/1,644.79 = 743.34/x
3. Step 3: Cross multiply
   1,191.30x = 1,644.79 × 743.34
4. Step 4: Simplify right side
   1,191.30x = 1,222,638.20
5. Step 5: Solve for x
   x = 1,222,638.20/1,191.30
6. Step 6: Final answer
   x = 1,026.31