Finding the Fourth Proportional to 3,931.72, 5,892.72 and 1,984.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,931.72 : 5,892.72 = 1,984.48 : x
2. Step 2: Convert to fraction form
   3,931.72/5,892.72 = 1,984.48/x
3. Step 3: Cross multiply
   3,931.72x = 5,892.72 × 1,984.48
4. Step 4: Simplify right side
   3,931.72x = 11,693,984.99
5. Step 5: Solve for x
   x = 11,693,984.99/3,931.72
6. Step 6: Final answer
   x = 2,974.27