Finding the Fourth Proportional to 1,377.14, 1,899.52 and 957.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.14 : 1,899.52 = 957.56 : x
2. Step 2: Convert to fraction form
   1,377.14/1,899.52 = 957.56/x
3. Step 3: Cross multiply
   1,377.14x = 1,899.52 × 957.56
4. Step 4: Simplify right side
   1,377.14x = 1,818,892.48
5. Step 5: Solve for x
   x = 1,818,892.48/1,377.14
6. Step 6: Final answer
   x = 1,320.78