Finding the Fourth Proportional to 1,132,644.50, 1,562,697.59 and 642,533.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,132,644.50 : 1,562,697.59 = 642,533.21 : x
2. Step 2: Convert to fraction form
   1,132,644.50/1,562,697.59 = 642,533.21/x
3. Step 3: Cross multiply
   1,132,644.50x = 1,562,697.59 × 642,533.21
4. Step 4: Simplify right side
   1,132,644.50x = 1,004,085,087,735.81
5. Step 5: Solve for x
   x = 1,004,085,087,735.81/1,132,644.50
6. Step 6: Final answer
   x = 886,496.24