Finding the Fourth Proportional to 2,604.42, 3,905.28 and 1,043.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,604.42 : 3,905.28 = 1,043.28 : x
2. Step 2: Convert to fraction form
   2,604.42/3,905.28 = 1,043.28/x
3. Step 3: Cross multiply
   2,604.42x = 3,905.28 × 1,043.28
4. Step 4: Simplify right side
   2,604.42x = 4,074,300.52
5. Step 5: Solve for x
   x = 4,074,300.52/2,604.42
6. Step 6: Final answer
   x = 1,564.38