Finding the Fourth Proportional to 1,677.43, 2,314.81 and 931.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,677.43 : 2,314.81 = 931.38 : x
2. Step 2: Convert to fraction form
   1,677.43/2,314.81 = 931.38/x
3. Step 3: Cross multiply
   1,677.43x = 2,314.81 × 931.38
4. Step 4: Simplify right side
   1,677.43x = 2,155,967.74
5. Step 5: Solve for x
   x = 2,155,967.74/1,677.43
6. Step 6: Final answer
   x = 1,285.28