Finding the Fourth Proportional to 1,677.58, 2,315.02 and 931.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,677.58 : 2,315.02 = 931.54 : x
2. Step 2: Convert to fraction form
   1,677.58/2,315.02 = 931.54/x
3. Step 3: Cross multiply
   1,677.58x = 2,315.02 × 931.54
4. Step 4: Simplify right side
   1,677.58x = 2,156,533.73
5. Step 5: Solve for x
   x = 2,156,533.73/1,677.58
6. Step 6: Final answer
   x = 1,285.50