Finding the Fourth Proportional to 1,623.82, 2,241.12 and 994.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,623.82 : 2,241.12 = 994.72 : x
2. Step 2: Convert to fraction form
   1,623.82/2,241.12 = 994.72/x
3. Step 3: Cross multiply
   1,623.82x = 2,241.12 × 994.72
4. Step 4: Simplify right side
   1,623.82x = 2,229,286.89
5. Step 5: Solve for x
   x = 2,229,286.89/1,623.82
6. Step 6: Final answer
   x = 1,372.87