Finding the Fourth Proportional to 2,601.90, 3,900.48 and 957.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.90 : 3,900.48 = 957.30 : x
2. Step 2: Convert to fraction form
   2,601.90/3,900.48 = 957.30/x
3. Step 3: Cross multiply
   2,601.90x = 3,900.48 × 957.30
4. Step 4: Simplify right side
   2,601.90x = 3,733,929.50
5. Step 5: Solve for x
   x = 3,733,929.50/2,601.90
6. Step 6: Final answer
   x = 1,435.08