Finding the Fourth Proportional to 3,990.24, 5,980.50 and 1,798.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,990.24 : 5,980.50 = 1,798.38 : x
2. Step 2: Convert to fraction form
   3,990.24/5,980.50 = 1,798.38/x
3. Step 3: Cross multiply
   3,990.24x = 5,980.50 × 1,798.38
4. Step 4: Simplify right side
   3,990.24x = 10,755,211.59
5. Step 5: Solve for x
   x = 10,755,211.59/3,990.24
6. Step 6: Final answer
   x = 2,695.38