Finding the Fourth Proportional to 1,759.88, 2,638.54 and 1,144.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,759.88 : 2,638.54 = 1,144.20 : x
2. Step 2: Convert to fraction form
   1,759.88/2,638.54 = 1,144.20/x
3. Step 3: Cross multiply
   1,759.88x = 2,638.54 × 1,144.20
4. Step 4: Simplify right side
   1,759.88x = 3,019,017.47
5. Step 5: Solve for x
   x = 3,019,017.47/1,759.88
6. Step 6: Final answer
   x = 1,715.47