Finding the Fourth Proportional to 805,643.98, 1,111,766.52 and 443,067.86

Step by Step Solution

1. Step 1: Write the proportion equation
   805,643.98 : 1,111,766.52 = 443,067.86 : x
2. Step 2: Convert to fraction form
   805,643.98/1,111,766.52 = 443,067.86/x
3. Step 3: Cross multiply
   805,643.98x = 1,111,766.52 × 443,067.86
4. Step 4: Simplify right side
   805,643.98x = 492,588,007,277.22
5. Step 5: Solve for x
   x = 492,588,007,277.22/805,643.98
6. Step 6: Final answer
   x = 611,421.45