Finding the Fourth Proportional to 1,011,162.72, 1,395,396 and 558,444

Step by Step Solution

1. Step 1: Write the proportion equation
   1,011,162.72 : 1,395,396 = 558,444 : x
2. Step 2: Convert to fraction form
   1,011,162.72/1,395,396 = 558,444/x
3. Step 3: Cross multiply
   1,011,162.72x = 1,395,396 × 558,444
4. Step 4: Simplify right side
   1,011,162.72x = 779,250,523,824
5. Step 5: Solve for x
   x = 779,250,523,824/1,011,162.72
6. Step 6: Final answer
   x = 770,648.00