Finding the Fourth Proportional to 1,002.42, 1,383.48 and 836.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.42 : 1,383.48 = 836.37 : x
2. Step 2: Convert to fraction form
   1,002.42/1,383.48 = 836.37/x
3. Step 3: Cross multiply
   1,002.42x = 1,383.48 × 836.37
4. Step 4: Simplify right side
   1,002.42x = 1,157,101.17
5. Step 5: Solve for x
   x = 1,157,101.17/1,002.42
6. Step 6: Final answer
   x = 1,154.31