Finding the Fourth Proportional to 2,215.32, 3,325.03 and 1,120.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.32 : 3,325.03 = 1,120.45 : x
2. Step 2: Convert to fraction form
   2,215.32/3,325.03 = 1,120.45/x
3. Step 3: Cross multiply
   2,215.32x = 3,325.03 × 1,120.45
4. Step 4: Simplify right side
   2,215.32x = 3,725,529.86
5. Step 5: Solve for x
   x = 3,725,529.86/2,215.32
6. Step 6: Final answer
   x = 1,681.71