Finding the Fourth Proportional to 3,410.30, 5,115.43 and 945.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,410.30 : 5,115.43 = 945.10 : x
2. Step 2: Convert to fraction form
   3,410.30/5,115.43 = 945.10/x
3. Step 3: Cross multiply
   3,410.30x = 5,115.43 × 945.10
4. Step 4: Simplify right side
   3,410.30x = 4,834,592.89
5. Step 5: Solve for x
   x = 4,834,592.89/3,410.30
6. Step 6: Final answer
   x = 1,417.64