Finding the Fourth Proportional to 3,145.30, 4,345.05 and 3,048.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,145.30 : 4,345.05 = 3,048.10 : x
2. Step 2: Convert to fraction form
   3,145.30/4,345.05 = 3,048.10/x
3. Step 3: Cross multiply
   3,145.30x = 4,345.05 × 3,048.10
4. Step 4: Simplify right side
   3,145.30x = 13,244,146.91
5. Step 5: Solve for x
   x = 13,244,146.91/3,145.30
6. Step 6: Final answer
   x = 4,210.77