Finding the Fourth Proportional to 804,989.32, 1,110,911.89 and 442,426.03

Step by Step Solution

1. Step 1: Write the proportion equation
   804,989.32 : 1,110,911.89 = 442,426.03 : x
2. Step 2: Convert to fraction form
   804,989.32/1,110,911.89 = 442,426.03/x
3. Step 3: Cross multiply
   804,989.32x = 1,110,911.89 × 442,426.03
4. Step 4: Simplify right side
   804,989.32x = 491,496,337,172.50
5. Step 5: Solve for x
   x = 491,496,337,172.50/804,989.32
6. Step 6: Final answer
   x = 610,562.56