Finding the Fourth Proportional to 997,105.14, 1,496,034.59 and 390,327.06

Step by Step Solution

1. Step 1: Write the proportion equation
   997,105.14 : 1,496,034.59 = 390,327.06 : x
2. Step 2: Convert to fraction form
   997,105.14/1,496,034.59 = 390,327.06/x
3. Step 3: Cross multiply
   997,105.14x = 1,496,034.59 × 390,327.06
4. Step 4: Simplify right side
   997,105.14x = 583,942,781,221.37
5. Step 5: Solve for x
   x = 583,942,781,221.37/997,105.14
6. Step 6: Final answer
   x = 585,638.12