Finding the Fourth Proportional to 1,419.79, 1,958.83 and 859.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419.79 : 1,958.83 = 859.29 : x
2. Step 2: Convert to fraction form
   1,419.79/1,958.83 = 859.29/x
3. Step 3: Cross multiply
   1,419.79x = 1,958.83 × 859.29
4. Step 4: Simplify right side
   1,419.79x = 1,683,193.24
5. Step 5: Solve for x
   x = 1,683,193.24/1,419.79
6. Step 6: Final answer
   x = 1,185.52