Finding the Fourth Proportional to 2,255.85, 3,385.83 and 1,216.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,255.85 : 3,385.83 = 1,216.87 : x
2. Step 2: Convert to fraction form
   2,255.85/3,385.83 = 1,216.87/x
3. Step 3: Cross multiply
   2,255.85x = 3,385.83 × 1,216.87
4. Step 4: Simplify right side
   2,255.85x = 4,120,130.10
5. Step 5: Solve for x
   x = 4,120,130.10/2,255.85
6. Step 6: Final answer
   x = 1,826.42