Finding the Fourth Proportional to 1,389,594.42, 2,083,323.59 and 705,919.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,389,594.42 : 2,083,323.59 = 705,919.20 : x
2. Step 2: Convert to fraction form
   1,389,594.42/2,083,323.59 = 705,919.20/x
3. Step 3: Cross multiply
   1,389,594.42x = 2,083,323.59 × 705,919.20
4. Step 4: Simplify right side
   1,389,594.42x = 1,470,658,123,758.73
5. Step 5: Solve for x
   x = 1,470,658,123,758.73/1,389,594.42
6. Step 6: Final answer
   x = 1,058,336.23