Finding the Fourth Proportional to 2,904.68, 4,355.86 and 1,054.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,904.68 : 4,355.86 = 1,054.78 : x
2. Step 2: Convert to fraction form
   2,904.68/4,355.86 = 1,054.78/x
3. Step 3: Cross multiply
   2,904.68x = 4,355.86 × 1,054.78
4. Step 4: Simplify right side
   2,904.68x = 4,594,480.42
5. Step 5: Solve for x
   x = 4,594,480.42/2,904.68
6. Step 6: Final answer
   x = 1,581.75