Finding the Fourth Proportional to 2,055.45, 2,837.25 and 1,216.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,055.45 : 2,837.25 = 1,216.45 : x
2. Step 2: Convert to fraction form
   2,055.45/2,837.25 = 1,216.45/x
3. Step 3: Cross multiply
   2,055.45x = 2,837.25 × 1,216.45
4. Step 4: Simplify right side
   2,055.45x = 3,451,372.76
5. Step 5: Solve for x
   x = 3,451,372.76/2,055.45
6. Step 6: Final answer
   x = 1,679.13