Finding the Fourth Proportional to 1,427.72, 1,967.89 and 955.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.72 : 1,967.89 = 955.44 : x
2. Step 2: Convert to fraction form
   1,427.72/1,967.89 = 955.44/x
3. Step 3: Cross multiply
   1,427.72x = 1,967.89 × 955.44
4. Step 4: Simplify right side
   1,427.72x = 1,880,200.82
5. Step 5: Solve for x
   x = 1,880,200.82/1,427.72
6. Step 6: Final answer
   x = 1,316.93