Finding the Fourth Proportional to 1,419.50, 1,958.94 and 1,064.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419.50 : 1,958.94 = 1,064.78 : x
2. Step 2: Convert to fraction form
   1,419.50/1,958.94 = 1,064.78/x
3. Step 3: Cross multiply
   1,419.50x = 1,958.94 × 1,064.78
4. Step 4: Simplify right side
   1,419.50x = 2,085,840.13
5. Step 5: Solve for x
   x = 2,085,840.13/1,419.50
6. Step 6: Final answer
   x = 1,469.42