Finding the Fourth Proportional to 1,738.28, 2,605.98 and 1,216.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,738.28 : 2,605.98 = 1,216.80 : x
2. Step 2: Convert to fraction form
   1,738.28/2,605.98 = 1,216.80/x
3. Step 3: Cross multiply
   1,738.28x = 2,605.98 × 1,216.80
4. Step 4: Simplify right side
   1,738.28x = 3,170,956.46
5. Step 5: Solve for x
   x = 3,170,956.46/1,738.28
6. Step 6: Final answer
   x = 1,824.19