Finding the Fourth Proportional to 1,409.94, 1,944.78 and 879.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.94 : 1,944.78 = 879.06 : x
2. Step 2: Convert to fraction form
   1,409.94/1,944.78 = 879.06/x
3. Step 3: Cross multiply
   1,409.94x = 1,944.78 × 879.06
4. Step 4: Simplify right side
   1,409.94x = 1,709,578.31
5. Step 5: Solve for x
   x = 1,709,578.31/1,409.94
6. Step 6: Final answer
   x = 1,212.52