Finding the Fourth Proportional to 1,093,498.79, 1,640,081.82 and 419,897.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,093,498.79 : 1,640,081.82 = 419,897.32 : x
2. Step 2: Convert to fraction form
   1,093,498.79/1,640,081.82 = 419,897.32/x
3. Step 3: Cross multiply
   1,093,498.79x = 1,640,081.82 × 419,897.32
4. Step 4: Simplify right side
   1,093,498.79x = 688,665,958,273.13
5. Step 5: Solve for x
   x = 688,665,958,273.13/1,093,498.79
6. Step 6: Final answer
   x = 629,782.10