Finding the Fourth Proportional to 1,410.46, 1,947.39 and 879.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,410.46 : 1,947.39 = 879.55 : x
2. Step 2: Convert to fraction form
   1,410.46/1,947.39 = 879.55/x
3. Step 3: Cross multiply
   1,410.46x = 1,947.39 × 879.55
4. Step 4: Simplify right side
   1,410.46x = 1,712,826.87
5. Step 5: Solve for x
   x = 1,712,826.87/1,410.46
6. Step 6: Final answer
   x = 1,214.37