Finding the Fourth Proportional to 2,105.84, 3,159.43 and 1,010.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.84 : 3,159.43 = 1,010.28 : x
2. Step 2: Convert to fraction form
   2,105.84/3,159.43 = 1,010.28/x
3. Step 3: Cross multiply
   2,105.84x = 3,159.43 × 1,010.28
4. Step 4: Simplify right side
   2,105.84x = 3,191,908.94
5. Step 5: Solve for x
   x = 3,191,908.94/2,105.84
6. Step 6: Final answer
   x = 1,515.75