Finding the Fourth Proportional to 2,245.37, 3,369.46 and 858.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,245.37 : 3,369.46 = 858.83 : x
2. Step 2: Convert to fraction form
   2,245.37/3,369.46 = 858.83/x
3. Step 3: Cross multiply
   2,245.37x = 3,369.46 × 858.83
4. Step 4: Simplify right side
   2,245.37x = 2,893,774.34
5. Step 5: Solve for x
   x = 2,893,774.34/2,245.37
6. Step 6: Final answer
   x = 1,288.77