Finding the Fourth Proportional to 1,517.31, 2,274.75 and 1,431.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,517.31 : 2,274.75 = 1,431.45 : x
2. Step 2: Convert to fraction form
   1,517.31/2,274.75 = 1,431.45/x
3. Step 3: Cross multiply
   1,517.31x = 2,274.75 × 1,431.45
4. Step 4: Simplify right side
   1,517.31x = 3,256,190.89
5. Step 5: Solve for x
   x = 3,256,190.89/1,517.31
6. Step 6: Final answer
   x = 2,146.03