Finding the Fourth Proportional to 1,066,249.51, 1,599,456.89 and 356,280.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066,249.51 : 1,599,456.89 = 356,280.05 : x
2. Step 2: Convert to fraction form
   1,066,249.51/1,599,456.89 = 356,280.05/x
3. Step 3: Cross multiply
   1,066,249.51x = 1,599,456.89 × 356,280.05
4. Step 4: Simplify right side
   1,066,249.51x = 569,854,585,631.39
5. Step 5: Solve for x
   x = 569,854,585,631.39/1,066,249.51
6. Step 6: Final answer
   x = 534,447.69