Finding the Fourth Proportional to 1,433.49, 1,978.32 and 937.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.49 : 1,978.32 = 937.47 : x
2. Step 2: Convert to fraction form
   1,433.49/1,978.32 = 937.47/x
3. Step 3: Cross multiply
   1,433.49x = 1,978.32 × 937.47
4. Step 4: Simplify right side
   1,433.49x = 1,854,615.65
5. Step 5: Solve for x
   x = 1,854,615.65/1,433.49
6. Step 6: Final answer
   x = 1,293.78