Finding the Fourth Proportional to 1,731.42, 2,391.34 and 1,144.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,731.42 : 2,391.34 = 1,144.56 : x
2. Step 2: Convert to fraction form
   1,731.42/2,391.34 = 1,144.56/x
3. Step 3: Cross multiply
   1,731.42x = 2,391.34 × 1,144.56
4. Step 4: Simplify right side
   1,731.42x = 2,737,032.11
5. Step 5: Solve for x
   x = 2,737,032.11/1,731.42
6. Step 6: Final answer
   x = 1,580.80