Finding the Fourth Proportional to 3,507.57, 5,261.31 and 1,042.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,507.57 : 5,261.31 = 1,042.38 : x
2. Step 2: Convert to fraction form
   3,507.57/5,261.31 = 1,042.38/x
3. Step 3: Cross multiply
   3,507.57x = 5,261.31 × 1,042.38
4. Step 4: Simplify right side
   3,507.57x = 5,484,284.32
5. Step 5: Solve for x
   x = 5,484,284.32/3,507.57
6. Step 6: Final answer
   x = 1,563.56