Finding the Fourth Proportional to 1,295.89, 1,787.93 and 1,171.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,295.89 : 1,787.93 = 1,171.15 : x
2. Step 2: Convert to fraction form
   1,295.89/1,787.93 = 1,171.15/x
3. Step 3: Cross multiply
   1,295.89x = 1,787.93 × 1,171.15
4. Step 4: Simplify right side
   1,295.89x = 2,093,934.22
5. Step 5: Solve for x
   x = 2,093,934.22/1,295.89
6. Step 6: Final answer
   x = 1,615.83