Finding the Fourth Proportional to 1,421.22, 1,960.41 and 1,047.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,421.22 : 1,960.41 = 1,047.40 : x
2. Step 2: Convert to fraction form
   1,421.22/1,960.41 = 1,047.40/x
3. Step 3: Cross multiply
   1,421.22x = 1,960.41 × 1,047.40
4. Step 4: Simplify right side
   1,421.22x = 2,053,333.43
5. Step 5: Solve for x
   x = 2,053,333.43/1,421.22
6. Step 6: Final answer
   x = 1,444.77