Finding the Fourth Proportional to 2,185.69, 3,278.05 and 625.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.69 : 3,278.05 = 625.69 : x
2. Step 2: Convert to fraction form
   2,185.69/3,278.05 = 625.69/x
3. Step 3: Cross multiply
   2,185.69x = 3,278.05 × 625.69
4. Step 4: Simplify right side
   2,185.69x = 2,051,034.01
5. Step 5: Solve for x
   x = 2,051,034.01/2,185.69
6. Step 6: Final answer
   x = 938.39