Finding the Fourth Proportional to 888,141.98, 1,225,561.89 and 500,936.06

Step by Step Solution

1. Step 1: Write the proportion equation
   888,141.98 : 1,225,561.89 = 500,936.06 : x
2. Step 2: Convert to fraction form
   888,141.98/1,225,561.89 = 500,936.06/x
3. Step 3: Cross multiply
   888,141.98x = 1,225,561.89 × 500,936.06
4. Step 4: Simplify right side
   888,141.98x = 613,928,149,405.17
5. Step 5: Solve for x
   x = 613,928,149,405.17/888,141.98
6. Step 6: Final answer
   x = 691,250.00