Finding the Fourth Proportional to 1,404.46, 2,106.15 and 709.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.46 : 2,106.15 = 709.75 : x
2. Step 2: Convert to fraction form
   1,404.46/2,106.15 = 709.75/x
3. Step 3: Cross multiply
   1,404.46x = 2,106.15 × 709.75
4. Step 4: Simplify right side
   1,404.46x = 1,494,839.96
5. Step 5: Solve for x
   x = 1,494,839.96/1,404.46
6. Step 6: Final answer
   x = 1,064.35