Finding the Fourth Proportional to 1,438.52, 1,983.80 and 940.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,438.52 : 1,983.80 = 940.96 : x
2. Step 2: Convert to fraction form
   1,438.52/1,983.80 = 940.96/x
3. Step 3: Cross multiply
   1,438.52x = 1,983.80 × 940.96
4. Step 4: Simplify right side
   1,438.52x = 1,866,676.45
5. Step 5: Solve for x
   x = 1,866,676.45/1,438.52
6. Step 6: Final answer
   x = 1,297.64