Finding the Fourth Proportional to 1,089,188.88, 1,503,190.83 and 624,104.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,089,188.88 : 1,503,190.83 = 624,104.34 : x
2. Step 2: Convert to fraction form
   1,089,188.88/1,503,190.83 = 624,104.34/x
3. Step 3: Cross multiply
   1,089,188.88x = 1,503,190.83 × 624,104.34
4. Step 4: Simplify right side
   1,089,188.88x = 938,147,920,851.20
5. Step 5: Solve for x
   x = 938,147,920,851.20/1,089,188.88
6. Step 6: Final answer
   x = 861,327.12