Finding the Fourth Proportional to 1,408.63, 1,942.73 and 1,055.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.63 : 1,942.73 = 1,055.38 : x
2. Step 2: Convert to fraction form
   1,408.63/1,942.73 = 1,055.38/x
3. Step 3: Cross multiply
   1,408.63x = 1,942.73 × 1,055.38
4. Step 4: Simplify right side
   1,408.63x = 2,050,321.92
5. Step 5: Solve for x
   x = 2,050,321.92/1,408.63
6. Step 6: Final answer
   x = 1,455.54