Finding the Fourth Proportional to 1,339,644.69, 2,009,532.69 and 540,826.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339,644.69 : 2,009,532.69 = 540,826.56 : x
2. Step 2: Convert to fraction form
   1,339,644.69/2,009,532.69 = 540,826.56/x
3. Step 3: Cross multiply
   1,339,644.69x = 2,009,532.69 × 540,826.56
4. Step 4: Simplify right side
   1,339,644.69x = 1,086,808,651,940.25
5. Step 5: Solve for x
   x = 1,086,808,651,940.25/1,339,644.69
6. Step 6: Final answer
   x = 811,266.35