Finding the Fourth Proportional to 2,005,430.34, 3,008,431.42 and 657,698.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,005,430.34 : 3,008,431.42 = 657,698.43 : x
2. Step 2: Convert to fraction form
   2,005,430.34/3,008,431.42 = 657,698.43/x
3. Step 3: Cross multiply
   2,005,430.34x = 3,008,431.42 × 657,698.43
4. Step 4: Simplify right side
   2,005,430.34x = 1,978,640,620,052.42
5. Step 5: Solve for x
   x = 1,978,640,620,052.42/2,005,430.34
6. Step 6: Final answer
   x = 986,641.41