Finding the Fourth Proportional to 1,419.48, 1,959.06 and 859.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419.48 : 1,959.06 = 859.94 : x
2. Step 2: Convert to fraction form
   1,419.48/1,959.06 = 859.94/x
3. Step 3: Cross multiply
   1,419.48x = 1,959.06 × 859.94
4. Step 4: Simplify right side
   1,419.48x = 1,684,671.61
5. Step 5: Solve for x
   x = 1,684,671.61/1,419.48
6. Step 6: Final answer
   x = 1,186.82