Finding the Fourth Proportional to 2,521.52, 3,779.74 and 961.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521.52 : 3,779.74 = 961.12 : x
2. Step 2: Convert to fraction form
   2,521.52/3,779.74 = 961.12/x
3. Step 3: Cross multiply
   2,521.52x = 3,779.74 × 961.12
4. Step 4: Simplify right side
   2,521.52x = 3,632,783.71
5. Step 5: Solve for x
   x = 3,632,783.71/2,521.52
6. Step 6: Final answer
   x = 1,440.71