Finding the Fourth Proportional to 2,172.95, 3,259.94 and 940.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172.95 : 3,259.94 = 940.71 : x
2. Step 2: Convert to fraction form
   2,172.95/3,259.94 = 940.71/x
3. Step 3: Cross multiply
   2,172.95x = 3,259.94 × 940.71
4. Step 4: Simplify right side
   2,172.95x = 3,066,665.68
5. Step 5: Solve for x
   x = 3,066,665.68/2,172.95
6. Step 6: Final answer
   x = 1,411.29