Finding the Fourth Proportional to 1,821.16, 2,729.94 and 724.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,821.16 : 2,729.94 = 724.84 : x
2. Step 2: Convert to fraction form
   1,821.16/2,729.94 = 724.84/x
3. Step 3: Cross multiply
   1,821.16x = 2,729.94 × 724.84
4. Step 4: Simplify right side
   1,821.16x = 1,978,769.71
5. Step 5: Solve for x
   x = 1,978,769.71/1,821.16
6. Step 6: Final answer
   x = 1,086.54