Finding the Fourth Proportional to 1,419,109.74, 2,128,434.33 and 408,001.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419,109.74 : 2,128,434.33 = 408,001.32 : x
2. Step 2: Convert to fraction form
   1,419,109.74/2,128,434.33 = 408,001.32/x
3. Step 3: Cross multiply
   1,419,109.74x = 2,128,434.33 × 408,001.32
4. Step 4: Simplify right side
   1,419,109.74x = 868,404,016,173.32
5. Step 5: Solve for x
   x = 868,404,016,173.32/1,419,109.74
6. Step 6: Final answer
   x = 611,935.77