Finding the Fourth Proportional to 2,047.59, 3,071.31 and 661.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,047.59 : 3,071.31 = 661.04 : x
2. Step 2: Convert to fraction form
   2,047.59/3,071.31 = 661.04/x
3. Step 3: Cross multiply
   2,047.59x = 3,071.31 × 661.04
4. Step 4: Simplify right side
   2,047.59x = 2,030,243.41
5. Step 5: Solve for x
   x = 2,030,243.41/2,047.59
6. Step 6: Final answer
   x = 991.53