Finding the Fourth Proportional to 2,121.55, 3,180.60 and 1,600.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,121.55 : 3,180.60 = 1,600.52 : x
2. Step 2: Convert to fraction form
   2,121.55/3,180.60 = 1,600.52/x
3. Step 3: Cross multiply
   2,121.55x = 3,180.60 × 1,600.52
4. Step 4: Simplify right side
   2,121.55x = 5,090,598.01
5. Step 5: Solve for x
   x = 5,090,598.01/2,121.55
6. Step 6: Final answer
   x = 2,399.47