Finding the Fourth Proportional to 3,986.50, 5,980.71 and 1,250.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,986.50 : 5,980.71 = 1,250.50 : x
2. Step 2: Convert to fraction form
   3,986.50/5,980.71 = 1,250.50/x
3. Step 3: Cross multiply
   3,986.50x = 5,980.71 × 1,250.50
4. Step 4: Simplify right side
   3,986.50x = 7,478,877.86
5. Step 5: Solve for x
   x = 7,478,877.86/3,986.50
6. Step 6: Final answer
   x = 1,876.05