Finding the Fourth Proportional to 1,058,704.24, 1,588,061.71 and 259,986.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,058,704.24 : 1,588,061.71 = 259,986.09 : x
2. Step 2: Convert to fraction form
   1,058,704.24/1,588,061.71 = 259,986.09/x
3. Step 3: Cross multiply
   1,058,704.24x = 1,588,061.71 × 259,986.09
4. Step 4: Simplify right side
   1,058,704.24x = 412,873,954,661.61
5. Step 5: Solve for x
   x = 412,873,954,661.61/1,058,704.24
6. Step 6: Final answer
   x = 389,980.45