Finding the Fourth Proportional to 2,189.86, 3,284.85 and 629.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.86 : 3,284.85 = 629.98 : x
2. Step 2: Convert to fraction form
   2,189.86/3,284.85 = 629.98/x
3. Step 3: Cross multiply
   2,189.86x = 3,284.85 × 629.98
4. Step 4: Simplify right side
   2,189.86x = 2,069,389.80
5. Step 5: Solve for x
   x = 2,069,389.80/2,189.86
6. Step 6: Final answer
   x = 944.99