Finding the Fourth Proportional to 2,653.98, 3,975.56 and 1,263.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,653.98 : 3,975.56 = 1,263.12 : x
2. Step 2: Convert to fraction form
   2,653.98/3,975.56 = 1,263.12/x
3. Step 3: Cross multiply
   2,653.98x = 3,975.56 × 1,263.12
4. Step 4: Simplify right side
   2,653.98x = 5,021,609.35
5. Step 5: Solve for x
   x = 5,021,609.35/2,653.98
6. Step 6: Final answer
   x = 1,892.11