Finding the Fourth Proportional to 1,411.39, 1,946.72 and 879.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.39 : 1,946.72 = 879.83 : x
2. Step 2: Convert to fraction form
   1,411.39/1,946.72 = 879.83/x
3. Step 3: Cross multiply
   1,411.39x = 1,946.72 × 879.83
4. Step 4: Simplify right side
   1,411.39x = 1,712,768.52
5. Step 5: Solve for x
   x = 1,712,768.52/1,411.39
6. Step 6: Final answer
   x = 1,213.54