Finding the Fourth Proportional to 1,132,554.83, 1,562,573.76 and 642,443.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,132,554.83 : 1,562,573.76 = 642,443.63 : x
2. Step 2: Convert to fraction form
   1,132,554.83/1,562,573.76 = 642,443.63/x
3. Step 3: Cross multiply
   1,132,554.83x = 1,562,573.76 × 642,443.63
4. Step 4: Simplify right side
   1,132,554.83x = 1,003,865,558,517.15
5. Step 5: Solve for x
   x = 1,003,865,558,517.15/1,132,554.83
6. Step 6: Final answer
   x = 886,372.59