Finding the Fourth Proportional to 1,406,061.75, 2,109,452.27 and 408,789.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406,061.75 : 2,109,452.27 = 408,789.75 : x
2. Step 2: Convert to fraction form
   1,406,061.75/2,109,452.27 = 408,789.75/x
3. Step 3: Cross multiply
   1,406,061.75x = 2,109,452.27 × 408,789.75
4. Step 4: Simplify right side
   1,406,061.75x = 862,322,464,046.28
5. Step 5: Solve for x
   x = 862,322,464,046.28/1,406,061.75
6. Step 6: Final answer
   x = 613,289.18