Finding the Fourth Proportional to 2,584.52, 3,876.72 and 636.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,584.52 : 3,876.72 = 636.72 : x
2. Step 2: Convert to fraction form
   2,584.52/3,876.72 = 636.72/x
3. Step 3: Cross multiply
   2,584.52x = 3,876.72 × 636.72
4. Step 4: Simplify right side
   2,584.52x = 2,468,385.16
5. Step 5: Solve for x
   x = 2,468,385.16/2,584.52
6. Step 6: Final answer
   x = 955.07