Finding the Fourth Proportional to 2,653.68, 3,981.12 and 1,010.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,653.68 : 3,981.12 = 1,010.28 : x
2. Step 2: Convert to fraction form
   2,653.68/3,981.12 = 1,010.28/x
3. Step 3: Cross multiply
   2,653.68x = 3,981.12 × 1,010.28
4. Step 4: Simplify right side
   2,653.68x = 4,022,045.91
5. Step 5: Solve for x
   x = 4,022,045.91/2,653.68
6. Step 6: Final answer
   x = 1,515.65