Finding the Fourth Proportional to 3,861.98, 5,792.94 and 940.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,861.98 : 5,792.94 = 940.31 : x
2. Step 2: Convert to fraction form
   3,861.98/5,792.94 = 940.31/x
3. Step 3: Cross multiply
   3,861.98x = 5,792.94 × 940.31
4. Step 4: Simplify right side
   3,861.98x = 5,447,130.45
5. Step 5: Solve for x
   x = 5,447,130.45/3,861.98
6. Step 6: Final answer
   x = 1,410.45