Finding the Fourth Proportional to 1,278,056.72, 1,763,656.71 and 697,245.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,278,056.72 : 1,763,656.71 = 697,245.27 : x
2. Step 2: Convert to fraction form
   1,278,056.72/1,763,656.71 = 697,245.27/x
3. Step 3: Cross multiply
   1,278,056.72x = 1,763,656.71 × 697,245.27
4. Step 4: Simplify right side
   1,278,056.72x = 1,229,701,305,526.46
5. Step 5: Solve for x
   x = 1,229,701,305,526.46/1,278,056.72
6. Step 6: Final answer
   x = 962,164.89