Finding the Fourth Proportional to 1,738.71, 2,608.04 and 918.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,738.71 : 2,608.04 = 918.59 : x
2. Step 2: Convert to fraction form
   1,738.71/2,608.04 = 918.59/x
3. Step 3: Cross multiply
   1,738.71x = 2,608.04 × 918.59
4. Step 4: Simplify right side
   1,738.71x = 2,395,708.72
5. Step 5: Solve for x
   x = 2,395,708.72/1,738.71
6. Step 6: Final answer
   x = 1,377.87