Finding the Fourth Proportional to 1,132,559.75, 1,562,580.59 and 642,448.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,132,559.75 : 1,562,580.59 = 642,448.49 : x
2. Step 2: Convert to fraction form
   1,132,559.75/1,562,580.59 = 642,448.49/x
3. Step 3: Cross multiply
   1,132,559.75x = 1,562,580.59 × 642,448.49
4. Step 4: Simplify right side
   1,132,559.75x = 1,003,877,534,342.03
5. Step 5: Solve for x
   x = 1,003,877,534,342.03/1,132,559.75
6. Step 6: Final answer
   x = 886,379.32