Finding the Fourth Proportional to 1,621.12, 2,434.50 and 1,598.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621.12 : 2,434.50 = 1,598.02 : x
2. Step 2: Convert to fraction form
   1,621.12/2,434.50 = 1,598.02/x
3. Step 3: Cross multiply
   1,621.12x = 2,434.50 × 1,598.02
4. Step 4: Simplify right side
   1,621.12x = 3,890,379.69
5. Step 5: Solve for x
   x = 3,890,379.69/1,621.12
6. Step 6: Final answer
   x = 2,399.81