Finding the Fourth Proportional to 3,505.46, 5,256.60 and 1,039.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,505.46 : 5,256.60 = 1,039.42 : x
2. Step 2: Convert to fraction form
   3,505.46/5,256.60 = 1,039.42/x
3. Step 3: Cross multiply
   3,505.46x = 5,256.60 × 1,039.42
4. Step 4: Simplify right side
   3,505.46x = 5,463,815.17
5. Step 5: Solve for x
   x = 5,463,815.17/3,505.46
6. Step 6: Final answer
   x = 1,558.66