Finding the Fourth Proportional to 1,420.72, 1,959.93 and 948.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,420.72 : 1,959.93 = 948.49 : x
2. Step 2: Convert to fraction form
   1,420.72/1,959.93 = 948.49/x
3. Step 3: Cross multiply
   1,420.72x = 1,959.93 × 948.49
4. Step 4: Simplify right side
   1,420.72x = 1,858,974.01
5. Step 5: Solve for x
   x = 1,858,974.01/1,420.72
6. Step 6: Final answer
   x = 1,308.47