Finding the Fourth Proportional to 2,651.67, 3,977.52 and 920.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,651.67 : 3,977.52 = 920.30 : x
2. Step 2: Convert to fraction form
   2,651.67/3,977.52 = 920.30/x
3. Step 3: Cross multiply
   2,651.67x = 3,977.52 × 920.30
4. Step 4: Simplify right side
   2,651.67x = 3,660,491.77
5. Step 5: Solve for x
   x = 3,660,491.77/2,651.67
6. Step 6: Final answer
   x = 1,380.45