Finding the Fourth Proportional to 1,229,060.20, 1,696,104.12 and 685,185.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,229,060.20 : 1,696,104.12 = 685,185.09 : x
2. Step 2: Convert to fraction form
   1,229,060.20/1,696,104.12 = 685,185.09/x
3. Step 3: Cross multiply
   1,229,060.20x = 1,696,104.12 × 685,185.09
4. Step 4: Simplify right side
   1,229,060.20x = 1,162,145,254,111.57
5. Step 5: Solve for x
   x = 1,162,145,254,111.57/1,229,060.20
6. Step 6: Final answer
   x = 945,556.01