Finding the Fourth Proportional to 1,287,604.29, 1,777,113.83 and 743,642.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287,604.29 : 1,777,113.83 = 743,642.31 : x
2. Step 2: Convert to fraction form
   1,287,604.29/1,777,113.83 = 743,642.31/x
3. Step 3: Cross multiply
   1,287,604.29x = 1,777,113.83 × 743,642.31
4. Step 4: Simplify right side
   1,287,604.29x = 1,321,537,029,955.94
5. Step 5: Solve for x
   x = 1,321,537,029,955.94/1,287,604.29
6. Step 6: Final answer
   x = 1,026,353.39