Finding the Fourth Proportional to 1,442.52, 1,990.74 and 946.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,442.52 : 1,990.74 = 946.47 : x
2. Step 2: Convert to fraction form
   1,442.52/1,990.74 = 946.47/x
3. Step 3: Cross multiply
   1,442.52x = 1,990.74 × 946.47
4. Step 4: Simplify right side
   1,442.52x = 1,884,175.69
5. Step 5: Solve for x
   x = 1,884,175.69/1,442.52
6. Step 6: Final answer
   x = 1,306.17