Finding the Fourth Proportional to 1,206,705.72, 1,665,156.78 and 697,441.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,206,705.72 : 1,665,156.78 = 697,441.08 : x
2. Step 2: Convert to fraction form
   1,206,705.72/1,665,156.78 = 697,441.08/x
3. Step 3: Cross multiply
   1,206,705.72x = 1,665,156.78 × 697,441.08
4. Step 4: Simplify right side
   1,206,705.72x = 1,161,348,743,012.52
5. Step 5: Solve for x
   x = 1,161,348,743,012.52/1,206,705.72
6. Step 6: Final answer
   x = 962,412.56