Finding the Fourth Proportional to 1,132,611.12, 1,562,651.39 and 642,499.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,132,611.12 : 1,562,651.39 = 642,499.97 : x
2. Step 2: Convert to fraction form
   1,132,611.12/1,562,651.39 = 642,499.97/x
3. Step 3: Cross multiply
   1,132,611.12x = 1,562,651.39 × 642,499.97
4. Step 4: Simplify right side
   1,132,611.12x = 1,004,003,464,988.45
5. Step 5: Solve for x
   x = 1,004,003,464,988.45/1,132,611.12
6. Step 6: Final answer
   x = 886,450.30