Finding the Fourth Proportional to 1,466.56, 2,196.78 and 879.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,466.56 : 2,196.78 = 879.70 : x
2. Step 2: Convert to fraction form
   1,466.56/2,196.78 = 879.70/x
3. Step 3: Cross multiply
   1,466.56x = 2,196.78 × 879.70
4. Step 4: Simplify right side
   1,466.56x = 1,932,507.37
5. Step 5: Solve for x
   x = 1,932,507.37/1,466.56
6. Step 6: Final answer
   x = 1,317.71