Finding the Fourth Proportional to 2,947.24, 4,419.69 and 866.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,947.24 : 4,419.69 = 866.53 : x
2. Step 2: Convert to fraction form
   2,947.24/4,419.69 = 866.53/x
3. Step 3: Cross multiply
   2,947.24x = 4,419.69 × 866.53
4. Step 4: Simplify right side
   2,947.24x = 3,829,793.98
5. Step 5: Solve for x
   x = 3,829,793.98/2,947.24
6. Step 6: Final answer
   x = 1,299.45