Finding the Fourth Proportional to 1,597.09, 2,388.80 and 1,331.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,597.09 : 2,388.80 = 1,331.92 : x
2. Step 2: Convert to fraction form
   1,597.09/2,388.80 = 1,331.92/x
3. Step 3: Cross multiply
   1,597.09x = 2,388.80 × 1,331.92
4. Step 4: Simplify right side
   1,597.09x = 3,181,671.89
5. Step 5: Solve for x
   x = 3,181,671.89/1,597.09
6. Step 6: Final answer
   x = 1,992.17