Finding the Fourth Proportional to 2,861.42, 4,309.29 and 2,518.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,861.42 : 4,309.29 = 2,518.50 : x
2. Step 2: Convert to fraction form
   2,861.42/4,309.29 = 2,518.50/x
3. Step 3: Cross multiply
   2,861.42x = 4,309.29 × 2,518.50
4. Step 4: Simplify right side
   2,861.42x = 10,852,946.87
5. Step 5: Solve for x
   x = 10,852,946.87/2,861.42
6. Step 6: Final answer
   x = 3,792.85