Finding the Fourth Proportional to 1,369.61, 1,889.69 and 949.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,369.61 : 1,889.69 = 949.49 : x
2. Step 2: Convert to fraction form
   1,369.61/1,889.69 = 949.49/x
3. Step 3: Cross multiply
   1,369.61x = 1,889.69 × 949.49
4. Step 4: Simplify right side
   1,369.61x = 1,794,227.56
5. Step 5: Solve for x
   x = 1,794,227.56/1,369.61
6. Step 6: Final answer
   x = 1,310.03