Finding the Fourth Proportional to 2,215.10, 3,320.48 and 1,060.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.10 : 3,320.48 = 1,060.22 : x
2. Step 2: Convert to fraction form
   2,215.10/3,320.48 = 1,060.22/x
3. Step 3: Cross multiply
   2,215.10x = 3,320.48 × 1,060.22
4. Step 4: Simplify right side
   2,215.10x = 3,520,439.31
5. Step 5: Solve for x
   x = 3,520,439.31/2,215.10
6. Step 6: Final answer
   x = 1,589.29