Finding the Fourth Proportional to 3,977.27, 5,487.98 and 2,298.90

Step by Step Solution

1. Step 1: Write the proportion equation
   3,977.27 : 5,487.98 = 2,298.90 : x
2. Step 2: Convert to fraction form
   3,977.27/5,487.98 = 2,298.90/x
3. Step 3: Cross multiply
   3,977.27x = 5,487.98 × 2,298.90
4. Step 4: Simplify right side
   3,977.27x = 12,616,317.22
5. Step 5: Solve for x
   x = 12,616,317.22/3,977.27
6. Step 6: Final answer
   x = 3,172.10