Finding the Fourth Proportional to 2,215.59, 3,321.23 and 1,475.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.59 : 3,321.23 = 1,475.81 : x
2. Step 2: Convert to fraction form
   2,215.59/3,321.23 = 1,475.81/x
3. Step 3: Cross multiply
   2,215.59x = 3,321.23 × 1,475.81
4. Step 4: Simplify right side
   2,215.59x = 4,901,480.46
5. Step 5: Solve for x
   x = 4,901,480.46/2,215.59
6. Step 6: Final answer
   x = 2,212.27