Finding the Fourth Proportional to 1,096,429.32, 1,641,436.94 and 639,623.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096,429.32 : 1,641,436.94 = 639,623.79 : x
2. Step 2: Convert to fraction form
   1,096,429.32/1,641,436.94 = 639,623.79/x
3. Step 3: Cross multiply
   1,096,429.32x = 1,641,436.94 × 639,623.79
4. Step 4: Simplify right side
   1,096,429.32x = 1,049,902,116,608.80
5. Step 5: Solve for x
   x = 1,049,902,116,608.80/1,096,429.32
6. Step 6: Final answer
   x = 957,564.80