Finding the Fourth Proportional to 2,096.15, 3,142.40 and 1,054.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,096.15 : 3,142.40 = 1,054.28 : x
2. Step 2: Convert to fraction form
   2,096.15/3,142.40 = 1,054.28/x
3. Step 3: Cross multiply
   2,096.15x = 3,142.40 × 1,054.28
4. Step 4: Simplify right side
   2,096.15x = 3,312,972.06
5. Step 5: Solve for x
   x = 3,312,972.06/2,096.15
6. Step 6: Final answer
   x = 1,580.51