Finding the Fourth Proportional to 890,989.47, 1,229,581.42 and 483,105.06

Step by Step Solution

1. Step 1: Write the proportion equation
   890,989.47 : 1,229,581.42 = 483,105.06 : x
2. Step 2: Convert to fraction form
   890,989.47/1,229,581.42 = 483,105.06/x
3. Step 3: Cross multiply
   890,989.47x = 1,229,581.42 × 483,105.06
4. Step 4: Simplify right side
   890,989.47x = 594,017,004,476.22
5. Step 5: Solve for x
   x = 594,017,004,476.22/890,989.47
6. Step 6: Final answer
   x = 666,693.63