Finding the Fourth Proportional to 805,641.98, 1,111,763.76 and 443,065.85

Step by Step Solution

1. Step 1: Write the proportion equation
   805,641.98 : 1,111,763.76 = 443,065.85 : x
2. Step 2: Convert to fraction form
   805,641.98/1,111,763.76 = 443,065.85/x
3. Step 3: Cross multiply
   805,641.98x = 1,111,763.76 × 443,065.85
4. Step 4: Simplify right side
   805,641.98x = 492,584,561,849.06
5. Step 5: Solve for x
   x = 492,584,561,849.06/805,641.98
6. Step 6: Final answer
   x = 611,418.69