Finding the Fourth Proportional to 1,338,109.72, 2,007,558.34 and 538,979.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,338,109.72 : 2,007,558.34 = 538,979.88 : x
2. Step 2: Convert to fraction form
   1,338,109.72/2,007,558.34 = 538,979.88/x
3. Step 3: Cross multiply
   1,338,109.72x = 2,007,558.34 × 538,979.88
4. Step 4: Simplify right side
   1,338,109.72x = 1,082,033,553,186.20
5. Step 5: Solve for x
   x = 1,082,033,553,186.20/1,338,109.72
6. Step 6: Final answer
   x = 808,628.42