Finding the Fourth Proportional to 2,522.80, 3,787.71 and 1,291.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,522.80 : 3,787.71 = 1,291.06 : x
2. Step 2: Convert to fraction form
   2,522.80/3,787.71 = 1,291.06/x
3. Step 3: Cross multiply
   2,522.80x = 3,787.71 × 1,291.06
4. Step 4: Simplify right side
   2,522.80x = 4,890,151.40
5. Step 5: Solve for x
   x = 4,890,151.40/2,522.80
6. Step 6: Final answer
   x = 1,938.38