Finding the Fourth Proportional to 3,555,978.89, 5,333,982.17 and 860,299.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,555,978.89 : 5,333,982.17 = 860,299.76 : x
2. Step 2: Convert to fraction form
   3,555,978.89/5,333,982.17 = 860,299.76/x
3. Step 3: Cross multiply
   3,555,978.89x = 5,333,982.17 × 860,299.76
4. Step 4: Simplify right side
   3,555,978.89x = 4,588,823,589,728.74
5. Step 5: Solve for x
   x = 4,588,823,589,728.74/3,555,978.89
6. Step 6: Final answer
   x = 1,290,452.99