Finding the Fourth Proportional to 1,040.68, 1,560.89 and 650.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,040.68 : 1,560.89 = 650.71 : x
2. Step 2: Convert to fraction form
   1,040.68/1,560.89 = 650.71/x
3. Step 3: Cross multiply
   1,040.68x = 1,560.89 × 650.71
4. Step 4: Simplify right side
   1,040.68x = 1,015,683.48
5. Step 5: Solve for x
   x = 1,015,683.48/1,040.68
6. Step 6: Final answer
   x = 975.99