Finding the Fourth Proportional to 2,622.51, 3,618.99 and 1,561.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622.51 : 3,618.99 = 1,561.50 : x
2. Step 2: Convert to fraction form
   2,622.51/3,618.99 = 1,561.50/x
3. Step 3: Cross multiply
   2,622.51x = 3,618.99 × 1,561.50
4. Step 4: Simplify right side
   2,622.51x = 5,651,052.89
5. Step 5: Solve for x
   x = 5,651,052.89/2,622.51
6. Step 6: Final answer
   x = 2,154.83