Finding the Fourth Proportional to 2,622.56, 3,619.10 and 1,427.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622.56 : 3,619.10 = 1,427.58 : x
2. Step 2: Convert to fraction form
   2,622.56/3,619.10 = 1,427.58/x
3. Step 3: Cross multiply
   2,622.56x = 3,619.10 × 1,427.58
4. Step 4: Simplify right side
   2,622.56x = 5,166,554.78
5. Step 5: Solve for x
   x = 5,166,554.78/2,622.56
6. Step 6: Final answer
   x = 1,970.04