Finding the Fourth Proportional to 2,870.24, 4,305.83 and 922.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.24 : 4,305.83 = 922.19 : x
2. Step 2: Convert to fraction form
   2,870.24/4,305.83 = 922.19/x
3. Step 3: Cross multiply
   2,870.24x = 4,305.83 × 922.19
4. Step 4: Simplify right side
   2,870.24x = 3,970,767.23
5. Step 5: Solve for x
   x = 3,970,767.23/2,870.24
6. Step 6: Final answer
   x = 1,383.43