Finding the Fourth Proportional to 2,653.41, 3,978.57 and 1,010.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,653.41 : 3,978.57 = 1,010.07 : x
2. Step 2: Convert to fraction form
   2,653.41/3,978.57 = 1,010.07/x
3. Step 3: Cross multiply
   2,653.41x = 3,978.57 × 1,010.07
4. Step 4: Simplify right side
   2,653.41x = 4,018,634.20
5. Step 5: Solve for x
   x = 4,018,634.20/2,653.41
6. Step 6: Final answer
   x = 1,514.52