Finding the Fourth Proportional to 2,810.34, 4,216.01 and 961.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,810.34 : 4,216.01 = 961.02 : x
2. Step 2: Convert to fraction form
   2,810.34/4,216.01 = 961.02/x
3. Step 3: Cross multiply
   2,810.34x = 4,216.01 × 961.02
4. Step 4: Simplify right side
   2,810.34x = 4,051,669.93
5. Step 5: Solve for x
   x = 4,051,669.93/2,810.34
6. Step 6: Final answer
   x = 1,441.70