Finding the Fourth Proportional to 646,780.72, 886,093.89 and 622,538.88

Step by Step Solution

1. Step 1: Write the proportion equation
   646,780.72 : 886,093.89 = 622,538.88 : x
2. Step 2: Convert to fraction form
   646,780.72/886,093.89 = 622,538.88/x
3. Step 3: Cross multiply
   646,780.72x = 886,093.89 × 622,538.88
4. Step 4: Simplify right side
   646,780.72x = 551,627,897,855.44
5. Step 5: Solve for x
   x = 551,627,897,855.44/646,780.72
6. Step 6: Final answer
   x = 852,882.41