Finding the Fourth Proportional to 1,978, 2,729.88 and 1,150

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978 : 2,729.88 = 1,150 : x
2. Step 2: Convert to fraction form
   1,978/2,729.88 = 1,150/x
3. Step 3: Cross multiply
   1,978x = 2,729.88 × 1,150
4. Step 4: Simplify right side
   1,978x = 3,139,362
5. Step 5: Solve for x
   x = 3,139,362/1,978
6. Step 6: Final answer
   x = 1,587.14