Finding the Fourth Proportional to 2,334.30, 3,221.10 and 1,286.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,334.30 : 3,221.10 = 1,286.34 : x
2. Step 2: Convert to fraction form
   2,334.30/3,221.10 = 1,286.34/x
3. Step 3: Cross multiply
   2,334.30x = 3,221.10 × 1,286.34
4. Step 4: Simplify right side
   2,334.30x = 4,143,429.77
5. Step 5: Solve for x
   x = 4,143,429.77/2,334.30
6. Step 6: Final answer
   x = 1,775.02