Finding the Fourth Proportional to 805,089.01, 1,111,052.06 and 442,540.45

Step by Step Solution

1. Step 1: Write the proportion equation
   805,089.01 : 1,111,052.06 = 442,540.45 : x
2. Step 2: Convert to fraction form
   805,089.01/1,111,052.06 = 442,540.45/x
3. Step 3: Cross multiply
   805,089.01x = 1,111,052.06 × 442,540.45
4. Step 4: Simplify right side
   805,089.01x = 491,685,478,605.83
5. Step 5: Solve for x
   x = 491,685,478,605.83/805,089.01
6. Step 6: Final answer
   x = 610,721.89