Finding the Fourth Proportional to 2,420.32, 3,627.96 and 1,120.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,420.32 : 3,627.96 = 1,120.72 : x
2. Step 2: Convert to fraction form
   2,420.32/3,627.96 = 1,120.72/x
3. Step 3: Cross multiply
   2,420.32x = 3,627.96 × 1,120.72
4. Step 4: Simplify right side
   2,420.32x = 4,065,927.33
5. Step 5: Solve for x
   x = 4,065,927.33/2,420.32
6. Step 6: Final answer
   x = 1,679.91