Finding the Fourth Proportional to 1,402.89, 2,103.31 and 709.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,402.89 : 2,103.31 = 709.24 : x
2. Step 2: Convert to fraction form
   1,402.89/2,103.31 = 709.24/x
3. Step 3: Cross multiply
   1,402.89x = 2,103.31 × 709.24
4. Step 4: Simplify right side
   1,402.89x = 1,491,751.58
5. Step 5: Solve for x
   x = 1,491,751.58/1,402.89
6. Step 6: Final answer
   x = 1,063.34