Finding the Fourth Proportional to 1,258,798.80, 1,737,162.27 and 685,838.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,258,798.80 : 1,737,162.27 = 685,838.82 : x
2. Step 2: Convert to fraction form
   1,258,798.80/1,737,162.27 = 685,838.82/x
3. Step 3: Cross multiply
   1,258,798.80x = 1,737,162.27 × 685,838.82
4. Step 4: Simplify right side
   1,258,798.80x = 1,191,413,321,405.32
5. Step 5: Solve for x
   x = 1,191,413,321,405.32/1,258,798.80
6. Step 6: Final answer
   x = 946,468.43