Finding the Fourth Proportional to 2,245.48, 3,369.72 and 859.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,245.48 : 3,369.72 = 859.98 : x
2. Step 2: Convert to fraction form
   2,245.48/3,369.72 = 859.98/x
3. Step 3: Cross multiply
   2,245.48x = 3,369.72 × 859.98
4. Step 4: Simplify right side
   2,245.48x = 2,897,891.81
5. Step 5: Solve for x
   x = 2,897,891.81/2,245.48
6. Step 6: Final answer
   x = 1,290.54