Finding the Fourth Proportional to 2,581.73, 3,561.65 and 1,533.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581.73 : 3,561.65 = 1,533.19 : x
2. Step 2: Convert to fraction form
   2,581.73/3,561.65 = 1,533.19/x
3. Step 3: Cross multiply
   2,581.73x = 3,561.65 × 1,533.19
4. Step 4: Simplify right side
   2,581.73x = 5,460,669.59
5. Step 5: Solve for x
   x = 5,460,669.59/2,581.73
6. Step 6: Final answer
   x = 2,115.12