Finding the Fourth Proportional to 1,268.88, 1,900.59 and 618.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,268.88 : 1,900.59 = 618.25 : x
2. Step 2: Convert to fraction form
   1,268.88/1,900.59 = 618.25/x
3. Step 3: Cross multiply
   1,268.88x = 1,900.59 × 618.25
4. Step 4: Simplify right side
   1,268.88x = 1,175,039.77
5. Step 5: Solve for x
   x = 1,175,039.77/1,268.88
6. Step 6: Final answer
   x = 926.04