Finding the Fourth Proportional to 2,522.55, 3,787.33 and 1,290.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,522.55 : 3,787.33 = 1,290.81 : x
2. Step 2: Convert to fraction form
   2,522.55/3,787.33 = 1,290.81/x
3. Step 3: Cross multiply
   2,522.55x = 3,787.33 × 1,290.81
4. Step 4: Simplify right side
   2,522.55x = 4,888,717.20
5. Step 5: Solve for x
   x = 4,888,717.20/2,522.55
6. Step 6: Final answer
   x = 1,938.01