Finding the Fourth Proportional to 1,409.44, 1,942.32 and 994.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.44 : 1,942.32 = 994.72 : x
2. Step 2: Convert to fraction form
   1,409.44/1,942.32 = 994.72/x
3. Step 3: Cross multiply
   1,409.44x = 1,942.32 × 994.72
4. Step 4: Simplify right side
   1,409.44x = 1,932,064.55
5. Step 5: Solve for x
   x = 1,932,064.55/1,409.44
6. Step 6: Final answer
   x = 1,370.80