Finding the Fourth Proportional to 1,491.95, 2,057.96 and 961.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,491.95 : 2,057.96 = 961.53 : x
2. Step 2: Convert to fraction form
   1,491.95/2,057.96 = 961.53/x
3. Step 3: Cross multiply
   1,491.95x = 2,057.96 × 961.53
4. Step 4: Simplify right side
   1,491.95x = 1,978,785.47
5. Step 5: Solve for x
   x = 1,978,785.47/1,491.95
6. Step 6: Final answer
   x = 1,326.31