Finding the Fourth Proportional to 1,538,642.61, 2,123,215.56 and 850,306.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,538,642.61 : 2,123,215.56 = 850,306.23 : x
2. Step 2: Convert to fraction form
   1,538,642.61/2,123,215.56 = 850,306.23/x
3. Step 3: Cross multiply
   1,538,642.61x = 2,123,215.56 × 850,306.23
4. Step 4: Simplify right side
   1,538,642.61x = 1,805,383,418,300.94
5. Step 5: Solve for x
   x = 1,805,383,418,300.94/1,538,642.61
6. Step 6: Final answer
   x = 1,173,361.12