Finding the Fourth Proportional to 3,139.30, 4,703.76 and 2,210.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,139.30 : 4,703.76 = 2,210.34 : x
2. Step 2: Convert to fraction form
   3,139.30/4,703.76 = 2,210.34/x
3. Step 3: Cross multiply
   3,139.30x = 4,703.76 × 2,210.34
4. Step 4: Simplify right side
   3,139.30x = 10,396,908.88
5. Step 5: Solve for x
   x = 10,396,908.88/3,139.30
6. Step 6: Final answer
   x = 3,311.86