Finding the Fourth Proportional to 1,984.72, 2,974.93 and 1,291.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,984.72 : 2,974.93 = 1,291.89 : x
2. Step 2: Convert to fraction form
   1,984.72/2,974.93 = 1,291.89/x
3. Step 3: Cross multiply
   1,984.72x = 2,974.93 × 1,291.89
4. Step 4: Simplify right side
   1,984.72x = 3,843,282.32
5. Step 5: Solve for x
   x = 3,843,282.32/1,984.72
6. Step 6: Final answer
   x = 1,936.44