Finding the Fourth Proportional to 1,017,106.27, 1,525,634.78 and 258,949.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017,106.27 : 1,525,634.78 = 258,949.37 : x
2. Step 2: Convert to fraction form
   1,017,106.27/1,525,634.78 = 258,949.37/x
3. Step 3: Cross multiply
   1,017,106.27x = 1,525,634.78 × 258,949.37
4. Step 4: Simplify right side
   1,017,106.27x = 395,062,165,131.09
5. Step 5: Solve for x
   x = 395,062,165,131.09/1,017,106.27
6. Step 6: Final answer
   x = 388,417.79