Finding the Fourth Proportional to 1,677.43, 2,314.83 and 931.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,677.43 : 2,314.83 = 931.36 : x
2. Step 2: Convert to fraction form
   1,677.43/2,314.83 = 931.36/x
3. Step 3: Cross multiply
   1,677.43x = 2,314.83 × 931.36
4. Step 4: Simplify right side
   1,677.43x = 2,155,934.28
5. Step 5: Solve for x
   x = 2,155,934.28/1,677.43
6. Step 6: Final answer
   x = 1,285.26