Finding the Fourth Proportional to 2,681.37, 3,700.76 and 1,620

Step by Step Solution

1. Step 1: Write the proportion equation
   2,681.37 : 3,700.76 = 1,620 : x
2. Step 2: Convert to fraction form
   2,681.37/3,700.76 = 1,620/x
3. Step 3: Cross multiply
   2,681.37x = 3,700.76 × 1,620
4. Step 4: Simplify right side
   2,681.37x = 5,995,223.10
5. Step 5: Solve for x
   x = 5,995,223.10/2,681.37
6. Step 6: Final answer
   x = 2,235.88