Finding the Fourth Proportional to 2,753.36, 4,131.96 and 1,213.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,753.36 : 4,131.96 = 1,213.52 : x
2. Step 2: Convert to fraction form
   2,753.36/4,131.96 = 1,213.52/x
3. Step 3: Cross multiply
   2,753.36x = 4,131.96 × 1,213.52
4. Step 4: Simplify right side
   2,753.36x = 5,014,216.10
5. Step 5: Solve for x
   x = 5,014,216.10/2,753.36
6. Step 6: Final answer
   x = 1,821.13