Finding the Fourth Proportional to 1,677.85, 2,315.37 and 969.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,677.85 : 2,315.37 = 969.61 : x
2. Step 2: Convert to fraction form
   1,677.85/2,315.37 = 969.61/x
3. Step 3: Cross multiply
   1,677.85x = 2,315.37 × 969.61
4. Step 4: Simplify right side
   1,677.85x = 2,245,005.91
5. Step 5: Solve for x
   x = 2,245,005.91/1,677.85
6. Step 6: Final answer
   x = 1,338.03