Finding the Fourth Proportional to 3,930.86, 5,894.38 and 2,287.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,930.86 : 5,894.38 = 2,287.98 : x
2. Step 2: Convert to fraction form
   3,930.86/5,894.38 = 2,287.98/x
3. Step 3: Cross multiply
   3,930.86x = 5,894.38 × 2,287.98
4. Step 4: Simplify right side
   3,930.86x = 13,486,223.55
5. Step 5: Solve for x
   x = 13,486,223.55/3,930.86
6. Step 6: Final answer
   x = 3,430.86