Finding the Fourth Proportional to 805,501.53, 1,111,610.39 and 442,945.53

Step by Step Solution

1. Step 1: Write the proportion equation
   805,501.53 : 1,111,610.39 = 442,945.53 : x
2. Step 2: Convert to fraction form
   805,501.53/1,111,610.39 = 442,945.53/x
3. Step 3: Cross multiply
   805,501.53x = 1,111,610.39 × 442,945.53
4. Step 4: Simplify right side
   805,501.53x = 492,382,851,137.33
5. Step 5: Solve for x
   x = 492,382,851,137.33/805,501.53
6. Step 6: Final answer
   x = 611,274.88