Finding the Fourth Proportional to 1,419.70, 1,958.56 and 947.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419.70 : 1,958.56 = 947.15 : x
2. Step 2: Convert to fraction form
   1,419.70/1,958.56 = 947.15/x
3. Step 3: Cross multiply
   1,419.70x = 1,958.56 × 947.15
4. Step 4: Simplify right side
   1,419.70x = 1,855,037.94
5. Step 5: Solve for x
   x = 1,855,037.94/1,419.70
6. Step 6: Final answer
   x = 1,306.64