Finding the Fourth Proportional to 1,990.86, 2,738.25 and 1,597.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,990.86 : 2,738.25 = 1,597.02 : x
2. Step 2: Convert to fraction form
   1,990.86/2,738.25 = 1,597.02/x
3. Step 3: Cross multiply
   1,990.86x = 2,738.25 × 1,597.02
4. Step 4: Simplify right side
   1,990.86x = 4,373,040.02
5. Step 5: Solve for x
   x = 4,373,040.02/1,990.86
6. Step 6: Final answer
   x = 2,196.56