Finding the Fourth Proportional to 2,561.23, 3,532.77 and 1,618.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561.23 : 3,532.77 = 1,618.22 : x
2. Step 2: Convert to fraction form
   2,561.23/3,532.77 = 1,618.22/x
3. Step 3: Cross multiply
   2,561.23x = 3,532.77 × 1,618.22
4. Step 4: Simplify right side
   2,561.23x = 5,716,807.90
5. Step 5: Solve for x
   x = 5,716,807.90/2,561.23
6. Step 6: Final answer
   x = 2,232.06