Finding the Fourth Proportional to 2,105.53, 3,148.77 and 1,578.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.53 : 3,148.77 = 1,578.83 : x
2. Step 2: Convert to fraction form
   2,105.53/3,148.77 = 1,578.83/x
3. Step 3: Cross multiply
   2,105.53x = 3,148.77 × 1,578.83
4. Step 4: Simplify right side
   2,105.53x = 4,971,362.72
5. Step 5: Solve for x
   x = 4,971,362.72/2,105.53
6. Step 6: Final answer
   x = 2,361.10