Finding the Fourth Proportional to 1,630.04, 2,441.60 and 1,281.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,630.04 : 2,441.60 = 1,281.72 : x
2. Step 2: Convert to fraction form
   1,630.04/2,441.60 = 1,281.72/x
3. Step 3: Cross multiply
   1,630.04x = 2,441.60 × 1,281.72
4. Step 4: Simplify right side
   1,630.04x = 3,129,447.55
5. Step 5: Solve for x
   x = 3,129,447.55/1,630.04
6. Step 6: Final answer
   x = 1,919.86