Finding the Fourth Proportional to 805,300.80, 1,111,315.80 and 442,730.82

Step by Step Solution

1. Step 1: Write the proportion equation
   805,300.80 : 1,111,315.80 = 442,730.82 : x
2. Step 2: Convert to fraction form
   805,300.80/1,111,315.80 = 442,730.82/x
3. Step 3: Cross multiply
   805,300.80x = 1,111,315.80 × 442,730.82
4. Step 4: Simplify right side
   805,300.80x = 492,013,755,412.96
5. Step 5: Solve for x
   x = 492,013,755,412.96/805,300.80
6. Step 6: Final answer
   x = 610,968.91