Finding the Fourth Proportional to 2,624.39, 3,621.83 and 1,561.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,624.39 : 3,621.83 = 1,561.87 : x
2. Step 2: Convert to fraction form
   2,624.39/3,621.83 = 1,561.87/x
3. Step 3: Cross multiply
   2,624.39x = 3,621.83 × 1,561.87
4. Step 4: Simplify right side
   2,624.39x = 5,656,827.62
5. Step 5: Solve for x
   x = 5,656,827.62/2,624.39
6. Step 6: Final answer
   x = 2,155.48