Finding the Fourth Proportional to 2,047.50, 3,071.29 and 660.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,047.50 : 3,071.29 = 660.96 : x
2. Step 2: Convert to fraction form
   2,047.50/3,071.29 = 660.96/x
3. Step 3: Cross multiply
   2,047.50x = 3,071.29 × 660.96
4. Step 4: Simplify right side
   2,047.50x = 2,030,001.28
5. Step 5: Solve for x
   x = 2,030,001.28/2,047.50
6. Step 6: Final answer
   x = 991.45