Finding the Fourth Proportional to 3,648.76, 5,475.78 and 1,458.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,648.76 : 5,475.78 = 1,458.10 : x
2. Step 2: Convert to fraction form
   3,648.76/5,475.78 = 1,458.10/x
3. Step 3: Cross multiply
   3,648.76x = 5,475.78 × 1,458.10
4. Step 4: Simplify right side
   3,648.76x = 7,984,234.82
5. Step 5: Solve for x
   x = 7,984,234.82/3,648.76
6. Step 6: Final answer
   x = 2,188.20