Finding the Fourth Proportional to 1,722.88, 2,586.56 and 1,104.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,722.88 : 2,586.56 = 1,104.96 : x
2. Step 2: Convert to fraction form
   1,722.88/2,586.56 = 1,104.96/x
3. Step 3: Cross multiply
   1,722.88x = 2,586.56 × 1,104.96
4. Step 4: Simplify right side
   1,722.88x = 2,858,045.34
5. Step 5: Solve for x
   x = 2,858,045.34/1,722.88
6. Step 6: Final answer
   x = 1,658.88