Finding the Fourth Proportional to 725,910.69, 1,089,087.57 and 371,173.89

Step by Step Solution

1. Step 1: Write the proportion equation
   725,910.69 : 1,089,087.57 = 371,173.89 : x
2. Step 2: Convert to fraction form
   725,910.69/1,089,087.57 = 371,173.89/x
3. Step 3: Cross multiply
   725,910.69x = 1,089,087.57 × 371,173.89
4. Step 4: Simplify right side
   725,910.69x = 404,240,869,907.55
5. Step 5: Solve for x
   x = 404,240,869,907.55/725,910.69
6. Step 6: Final answer
   x = 556,874.11