Finding the Fourth Proportional to 1,155.05, 1,738.82 and 1,054.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155.05 : 1,738.82 = 1,054.61 : x
2. Step 2: Convert to fraction form
   1,155.05/1,738.82 = 1,054.61/x
3. Step 3: Cross multiply
   1,155.05x = 1,738.82 × 1,054.61
4. Step 4: Simplify right side
   1,155.05x = 1,833,783.94
5. Step 5: Solve for x
   x = 1,833,783.94/1,155.05
6. Step 6: Final answer
   x = 1,587.62