Finding the Fourth Proportional to 1,282,109.31, 1,923,602.88 and 483,619.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,282,109.31 : 1,923,602.88 = 483,619.21 : x
2. Step 2: Convert to fraction form
   1,282,109.31/1,923,602.88 = 483,619.21/x
3. Step 3: Cross multiply
   1,282,109.31x = 1,923,602.88 × 483,619.21
4. Step 4: Simplify right side
   1,282,109.31x = 930,291,302,183.89
5. Step 5: Solve for x
   x = 930,291,302,183.89/1,282,109.31
6. Step 6: Final answer
   x = 725,594.37