Finding the Fourth Proportional to 1,389,922.42, 2,086,228.50 and 670,770.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,389,922.42 : 2,086,228.50 = 670,770.37 : x
2. Step 2: Convert to fraction form
   1,389,922.42/2,086,228.50 = 670,770.37/x
3. Step 3: Cross multiply
   1,389,922.42x = 2,086,228.50 × 670,770.37
4. Step 4: Simplify right side
   1,389,922.42x = 1,399,380,262,849.55
5. Step 5: Solve for x
   x = 1,399,380,262,849.55/1,389,922.42
6. Step 6: Final answer
   x = 1,006,804.58