Finding the Fourth Proportional to 2,647.03, 3,971.83 and 1,087.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647.03 : 3,971.83 = 1,087.50 : x
2. Step 2: Convert to fraction form
   2,647.03/3,971.83 = 1,087.50/x
3. Step 3: Cross multiply
   2,647.03x = 3,971.83 × 1,087.50
4. Step 4: Simplify right side
   2,647.03x = 4,319,366.48
5. Step 5: Solve for x
   x = 4,319,366.48/2,647.03
6. Step 6: Final answer
   x = 1,631.78