Finding the Fourth Proportional to 2,055.52, 2,837.72 and 1,216.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,055.52 : 2,837.72 = 1,216.48 : x
2. Step 2: Convert to fraction form
   2,055.52/2,837.72 = 1,216.48/x
3. Step 3: Cross multiply
   2,055.52x = 2,837.72 × 1,216.48
4. Step 4: Simplify right side
   2,055.52x = 3,452,029.63
5. Step 5: Solve for x
   x = 3,452,029.63/2,055.52
6. Step 6: Final answer
   x = 1,679.39