Finding the Fourth Proportional to 3,935.59, 5,903.70 and 1,013.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,935.59 : 5,903.70 = 1,013.89 : x
2. Step 2: Convert to fraction form
   3,935.59/5,903.70 = 1,013.89/x
3. Step 3: Cross multiply
   3,935.59x = 5,903.70 × 1,013.89
4. Step 4: Simplify right side
   3,935.59x = 5,985,702.39
5. Step 5: Solve for x
   x = 5,985,702.39/3,935.59
6. Step 6: Final answer
   x = 1,520.92