Finding the Fourth Proportional to 1,774.92, 2,672.71 and 1,315.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,774.92 : 2,672.71 = 1,315.96 : x
2. Step 2: Convert to fraction form
   1,774.92/2,672.71 = 1,315.96/x
3. Step 3: Cross multiply
   1,774.92x = 2,672.71 × 1,315.96
4. Step 4: Simplify right side
   1,774.92x = 3,517,179.45
5. Step 5: Solve for x
   x = 3,517,179.45/1,774.92
6. Step 6: Final answer
   x = 1,981.60