Finding the Fourth Proportional to 2,622.34, 3,618.84 and 1,574.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622.34 : 3,618.84 = 1,574.40 : x
2. Step 2: Convert to fraction form
   2,622.34/3,618.84 = 1,574.40/x
3. Step 3: Cross multiply
   2,622.34x = 3,618.84 × 1,574.40
4. Step 4: Simplify right side
   2,622.34x = 5,697,501.70
5. Step 5: Solve for x
   x = 5,697,501.70/2,622.34
6. Step 6: Final answer
   x = 2,172.68