Finding the Fourth Proportional to 1,007,006.12, 1,389,667.71 and 554,297.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,007,006.12 : 1,389,667.71 = 554,297.12 : x
2. Step 2: Convert to fraction form
   1,007,006.12/1,389,667.71 = 554,297.12/x
3. Step 3: Cross multiply
   1,007,006.12x = 1,389,667.71 × 554,297.12
4. Step 4: Simplify right side
   1,007,006.12x = 770,288,809,410.00
5. Step 5: Solve for x
   x = 770,288,809,410.00/1,007,006.12
6. Step 6: Final answer
   x = 764,929.62