Finding the Fourth Proportional to 2,621.89, 3,618.03 and 1,559.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.89 : 3,618.03 = 1,559.61 : x
2. Step 2: Convert to fraction form
   2,621.89/3,618.03 = 1,559.61/x
3. Step 3: Cross multiply
   2,621.89x = 3,618.03 × 1,559.61
4. Step 4: Simplify right side
   2,621.89x = 5,642,715.77
5. Step 5: Solve for x
   x = 5,642,715.77/2,621.89
6. Step 6: Final answer
   x = 2,152.16