Finding the Fourth Proportional to 1,054.35, 1,579.59 and 908.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,054.35 : 1,579.59 = 908.82 : x
2. Step 2: Convert to fraction form
   1,054.35/1,579.59 = 908.82/x
3. Step 3: Cross multiply
   1,054.35x = 1,579.59 × 908.82
4. Step 4: Simplify right side
   1,054.35x = 1,435,562.98
5. Step 5: Solve for x
   x = 1,435,562.98/1,054.35
6. Step 6: Final answer
   x = 1,361.56