Finding the Fourth Proportional to 2,653.64, 3,982.63 and 1,115.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,653.64 : 3,982.63 = 1,115.72 : x
2. Step 2: Convert to fraction form
   2,653.64/3,982.63 = 1,115.72/x
3. Step 3: Cross multiply
   2,653.64x = 3,982.63 × 1,115.72
4. Step 4: Simplify right side
   2,653.64x = 4,443,499.94
5. Step 5: Solve for x
   x = 4,443,499.94/2,653.64
6. Step 6: Final answer
   x = 1,674.49