Finding the Fourth Proportional to 2,371.72, 3,556.06 and 986.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,371.72 : 3,556.06 = 986.02 : x
2. Step 2: Convert to fraction form
   2,371.72/3,556.06 = 986.02/x
3. Step 3: Cross multiply
   2,371.72x = 3,556.06 × 986.02
4. Step 4: Simplify right side
   2,371.72x = 3,506,346.28
5. Step 5: Solve for x
   x = 3,506,346.28/2,371.72
6. Step 6: Final answer
   x = 1,478.40