Finding the Fourth Proportional to 1,383.09, 1,910.16 and 942.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,383.09 : 1,910.16 = 942.18 : x
2. Step 2: Convert to fraction form
   1,383.09/1,910.16 = 942.18/x
3. Step 3: Cross multiply
   1,383.09x = 1,910.16 × 942.18
4. Step 4: Simplify right side
   1,383.09x = 1,799,714.55
5. Step 5: Solve for x
   x = 1,799,714.55/1,383.09
6. Step 6: Final answer
   x = 1,301.23