Finding the Fourth Proportional to 3,930.96, 5,902.71 and 2,288.70

Step by Step Solution

1. Step 1: Write the proportion equation
   3,930.96 : 5,902.71 = 2,288.70 : x
2. Step 2: Convert to fraction form
   3,930.96/5,902.71 = 2,288.70/x
3. Step 3: Cross multiply
   3,930.96x = 5,902.71 × 2,288.70
4. Step 4: Simplify right side
   3,930.96x = 13,509,532.38
5. Step 5: Solve for x
   x = 13,509,532.38/3,930.96
6. Step 6: Final answer
   x = 3,436.70