Finding the Fourth Proportional to 1,003.76, 1,383.78 and 806.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.76 : 1,383.78 = 806.93 : x
2. Step 2: Convert to fraction form
   1,003.76/1,383.78 = 806.93/x
3. Step 3: Cross multiply
   1,003.76x = 1,383.78 × 806.93
4. Step 4: Simplify right side
   1,003.76x = 1,116,613.60
5. Step 5: Solve for x
   x = 1,116,613.60/1,003.76
6. Step 6: Final answer
   x = 1,112.43