Finding the Fourth Proportional to 2,200.04, 3,296.79 and 2,145.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,200.04 : 3,296.79 = 2,145.70 : x
2. Step 2: Convert to fraction form
   2,200.04/3,296.79 = 2,145.70/x
3. Step 3: Cross multiply
   2,200.04x = 3,296.79 × 2,145.70
4. Step 4: Simplify right side
   2,200.04x = 7,073,922.30
5. Step 5: Solve for x
   x = 7,073,922.30/2,200.04
6. Step 6: Final answer
   x = 3,215.36