Finding the Fourth Proportional to 1,377.13, 1,899.81 and 958.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.13 : 1,899.81 = 958.48 : x
2. Step 2: Convert to fraction form
   1,377.13/1,899.81 = 958.48/x
3. Step 3: Cross multiply
   1,377.13x = 1,899.81 × 958.48
4. Step 4: Simplify right side
   1,377.13x = 1,820,929.89
5. Step 5: Solve for x
   x = 1,820,929.89/1,377.13
6. Step 6: Final answer
   x = 1,322.26