Finding the Fourth Proportional to 1,383.57, 1,910.55 and 942.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,383.57 : 1,910.55 = 942.54 : x
2. Step 2: Convert to fraction form
   1,383.57/1,910.55 = 942.54/x
3. Step 3: Cross multiply
   1,383.57x = 1,910.55 × 942.54
4. Step 4: Simplify right side
   1,383.57x = 1,800,769.80
5. Step 5: Solve for x
   x = 1,800,769.80/1,383.57
6. Step 6: Final answer
   x = 1,301.54