Finding the Fourth Proportional to 1,258,855.22, 1,737,198.32 and 685,900.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,258,855.22 : 1,737,198.32 = 685,900.10 : x
2. Step 2: Convert to fraction form
   1,258,855.22/1,737,198.32 = 685,900.10/x
3. Step 3: Cross multiply
   1,258,855.22x = 1,737,198.32 × 685,900.10
4. Step 4: Simplify right side
   1,258,855.22x = 1,191,544,501,407.83
5. Step 5: Solve for x
   x = 1,191,544,501,407.83/1,258,855.22
6. Step 6: Final answer
   x = 946,530.21