Finding the Fourth Proportional to 1,677.37, 2,314.67 and 931.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,677.37 : 2,314.67 = 931.29 : x
2. Step 2: Convert to fraction form
   1,677.37/2,314.67 = 931.29/x
3. Step 3: Cross multiply
   1,677.37x = 2,314.67 × 931.29
4. Step 4: Simplify right side
   1,677.37x = 2,155,612.79
5. Step 5: Solve for x
   x = 2,155,612.79/1,677.37
6. Step 6: Final answer
   x = 1,285.11