Finding the Fourth Proportional to 1,770.57, 2,443.10 and 1,627.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,770.57 : 2,443.10 = 1,627.20 : x
2. Step 2: Convert to fraction form
   1,770.57/2,443.10 = 1,627.20/x
3. Step 3: Cross multiply
   1,770.57x = 2,443.10 × 1,627.20
4. Step 4: Simplify right side
   1,770.57x = 3,975,404.18
5. Step 5: Solve for x
   x = 3,975,404.18/1,770.57
6. Step 6: Final answer
   x = 2,245.27