Finding the Fourth Proportional to 1,619.04, 2,233.72 and 920.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,619.04 : 2,233.72 = 920.24 : x
2. Step 2: Convert to fraction form
   1,619.04/2,233.72 = 920.24/x
3. Step 3: Cross multiply
   1,619.04x = 2,233.72 × 920.24
4. Step 4: Simplify right side
   1,619.04x = 2,055,558.49
5. Step 5: Solve for x
   x = 2,055,558.49/1,619.04
6. Step 6: Final answer
   x = 1,269.62