Finding the Fourth Proportional to 862,498.58, 1,189,440.73 and 681,642.57

Step by Step Solution

1. Step 1: Write the proportion equation
   862,498.58 : 1,189,440.73 = 681,642.57 : x
2. Step 2: Convert to fraction form
   862,498.58/1,189,440.73 = 681,642.57/x
3. Step 3: Cross multiply
   862,498.58x = 1,189,440.73 × 681,642.57
4. Step 4: Simplify right side
   862,498.58x = 810,773,441,372.33
5. Step 5: Solve for x
   x = 810,773,441,372.33/862,498.58
6. Step 6: Final answer
   x = 940,028.73