Finding the Fourth Proportional to 1,313.30, 1,961.96 and 940.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,313.30 : 1,961.96 = 940.15 : x
2. Step 2: Convert to fraction form
   1,313.30/1,961.96 = 940.15/x
3. Step 3: Cross multiply
   1,313.30x = 1,961.96 × 940.15
4. Step 4: Simplify right side
   1,313.30x = 1,844,536.69
5. Step 5: Solve for x
   x = 1,844,536.69/1,313.30
6. Step 6: Final answer
   x = 1,404.51