Finding the Fourth Proportional to 3,935.78, 5,903.06 and 1,013.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,935.78 : 5,903.06 = 1,013.98 : x
2. Step 2: Convert to fraction form
   3,935.78/5,903.06 = 1,013.98/x
3. Step 3: Cross multiply
   3,935.78x = 5,903.06 × 1,013.98
4. Step 4: Simplify right side
   3,935.78x = 5,985,584.78
5. Step 5: Solve for x
   x = 5,985,584.78/3,935.78
6. Step 6: Final answer
   x = 1,520.81