Finding the Fourth Proportional to 1,419.72, 1,958.55 and 947.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419.72 : 1,958.55 = 947.49 : x
2. Step 2: Convert to fraction form
   1,419.72/1,958.55 = 947.49/x
3. Step 3: Cross multiply
   1,419.72x = 1,958.55 × 947.49
4. Step 4: Simplify right side
   1,419.72x = 1,855,706.54
5. Step 5: Solve for x
   x = 1,855,706.54/1,419.72
6. Step 6: Final answer
   x = 1,307.09