Finding the Fourth Proportional to 3,315.84, 4,972.72 and 1,124.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,315.84 : 4,972.72 = 1,124.16 : x
2. Step 2: Convert to fraction form
   3,315.84/4,972.72 = 1,124.16/x
3. Step 3: Cross multiply
   3,315.84x = 4,972.72 × 1,124.16
4. Step 4: Simplify right side
   3,315.84x = 5,590,132.92
5. Step 5: Solve for x
   x = 5,590,132.92/3,315.84
6. Step 6: Final answer
   x = 1,685.89