Finding the Fourth Proportional to 2,653.55, 3,978.74 and 1,010.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,653.55 : 3,978.74 = 1,010.22 : x
2. Step 2: Convert to fraction form
   2,653.55/3,978.74 = 1,010.22/x
3. Step 3: Cross multiply
   2,653.55x = 3,978.74 × 1,010.22
4. Step 4: Simplify right side
   2,653.55x = 4,019,397.67
5. Step 5: Solve for x
   x = 4,019,397.67/2,653.55
6. Step 6: Final answer
   x = 1,514.73