Finding the Fourth Proportional to 1,145.79, 1,721.42 and 735.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145.79 : 1,721.42 = 735.73 : x
2. Step 2: Convert to fraction form
   1,145.79/1,721.42 = 735.73/x
3. Step 3: Cross multiply
   1,145.79x = 1,721.42 × 735.73
4. Step 4: Simplify right side
   1,145.79x = 1,266,500.34
5. Step 5: Solve for x
   x = 1,266,500.34/1,145.79
6. Step 6: Final answer
   x = 1,105.35