Finding the Fourth Proportional to 1,972.17, 2,721.72 and 1,133.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,972.17 : 2,721.72 = 1,133.15 : x
2. Step 2: Convert to fraction form
   1,972.17/2,721.72 = 1,133.15/x
3. Step 3: Cross multiply
   1,972.17x = 2,721.72 × 1,133.15
4. Step 4: Simplify right side
   1,972.17x = 3,084,103.41
5. Step 5: Solve for x
   x = 3,084,103.41/1,972.17
6. Step 6: Final answer
   x = 1,563.81