Finding the Fourth Proportional to 1,369.58, 2,052.89 and 710.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,369.58 : 2,052.89 = 710.79 : x
2. Step 2: Convert to fraction form
   1,369.58/2,052.89 = 710.79/x
3. Step 3: Cross multiply
   1,369.58x = 2,052.89 × 710.79
4. Step 4: Simplify right side
   1,369.58x = 1,459,173.68
5. Step 5: Solve for x
   x = 1,459,173.68/1,369.58
6. Step 6: Final answer
   x = 1,065.42