Finding the Fourth Proportional to 1,421.38, 1,958.88 and 1,027.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,421.38 : 1,958.88 = 1,027.72 : x
2. Step 2: Convert to fraction form
   1,421.38/1,958.88 = 1,027.72/x
3. Step 3: Cross multiply
   1,421.38x = 1,958.88 × 1,027.72
4. Step 4: Simplify right side
   1,421.38x = 2,013,180.15
5. Step 5: Solve for x
   x = 2,013,180.15/1,421.38
6. Step 6: Final answer
   x = 1,416.36