Finding the Fourth Proportional to 2,621.82, 3,615.36 and 1,957.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.82 : 3,615.36 = 1,957.62 : x
2. Step 2: Convert to fraction form
   2,621.82/3,615.36 = 1,957.62/x
3. Step 3: Cross multiply
   2,621.82x = 3,615.36 × 1,957.62
4. Step 4: Simplify right side
   2,621.82x = 7,077,501.04
5. Step 5: Solve for x
   x = 7,077,501.04/2,621.82
6. Step 6: Final answer
   x = 2,699.46