Finding the Fourth Proportional to 1,259,089.82, 1,737,538.52 and 686,129.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,259,089.82 : 1,737,538.52 = 686,129.98 : x
2. Step 2: Convert to fraction form
   1,259,089.82/1,737,538.52 = 686,129.98/x
3. Step 3: Cross multiply
   1,259,089.82x = 1,737,538.52 × 686,129.98
4. Step 4: Simplify right side
   1,259,089.82x = 1,192,177,269,976.83
5. Step 5: Solve for x
   x = 1,192,177,269,976.83/1,259,089.82
6. Step 6: Final answer
   x = 946,856.41