Finding the Fourth Proportional to 2,215.38, 3,320.16 and 1,043.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.38 : 3,320.16 = 1,043.80 : x
2. Step 2: Convert to fraction form
   2,215.38/3,320.16 = 1,043.80/x
3. Step 3: Cross multiply
   2,215.38x = 3,320.16 × 1,043.80
4. Step 4: Simplify right side
   2,215.38x = 3,465,583.01
5. Step 5: Solve for x
   x = 3,465,583.01/2,215.38
6. Step 6: Final answer
   x = 1,564.33