Finding the Fourth Proportional to 4,920.40, 7,380.42 and 1,410.76

Step by Step Solution

1. Step 1: Write the proportion equation
   4,920.40 : 7,380.42 = 1,410.76 : x
2. Step 2: Convert to fraction form
   4,920.40/7,380.42 = 1,410.76/x
3. Step 3: Cross multiply
   4,920.40x = 7,380.42 × 1,410.76
4. Step 4: Simplify right side
   4,920.40x = 10,412,001.32
5. Step 5: Solve for x
   x = 10,412,001.32/4,920.40
6. Step 6: Final answer
   x = 2,116.09