Finding the Fourth Proportional to 1,338,108.72, 2,007,556.84 and 538,978.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,338,108.72 : 2,007,556.84 = 538,978.88 : x
2. Step 2: Convert to fraction form
   1,338,108.72/2,007,556.84 = 538,978.88/x
3. Step 3: Cross multiply
   1,338,108.72x = 2,007,556.84 × 538,978.88
4. Step 4: Simplify right side
   1,338,108.72x = 1,082,030,737,159.54
5. Step 5: Solve for x
   x = 1,082,030,737,159.54/1,338,108.72
6. Step 6: Final answer
   x = 808,626.92