Finding the Fourth Proportional to 2,553.25, 3,827.85 and 1,320.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,553.25 : 3,827.85 = 1,320.84 : x
2. Step 2: Convert to fraction form
   2,553.25/3,827.85 = 1,320.84/x
3. Step 3: Cross multiply
   2,553.25x = 3,827.85 × 1,320.84
4. Step 4: Simplify right side
   2,553.25x = 5,055,977.39
5. Step 5: Solve for x
   x = 5,055,977.39/2,553.25
6. Step 6: Final answer
   x = 1,980.21