Finding the Fourth Proportional to 3,977.00, 5,488.86 and 2,861.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,977.00 : 5,488.86 = 2,861.63 : x
2. Step 2: Convert to fraction form
   3,977.00/5,488.86 = 2,861.63/x
3. Step 3: Cross multiply
   3,977.00x = 5,488.86 × 2,861.63
4. Step 4: Simplify right side
   3,977.00x = 15,707,090.31
5. Step 5: Solve for x
   x = 15,707,090.31/3,977.00
6. Step 6: Final answer
   x = 3,949.48