Finding the Fourth Proportional to 2,522.46, 3,787.20 and 1,290.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,522.46 : 3,787.20 = 1,290.84 : x
2. Step 2: Convert to fraction form
   2,522.46/3,787.20 = 1,290.84/x
3. Step 3: Cross multiply
   2,522.46x = 3,787.20 × 1,290.84
4. Step 4: Simplify right side
   2,522.46x = 4,888,669.25
5. Step 5: Solve for x
   x = 4,888,669.25/2,522.46
6. Step 6: Final answer
   x = 1,938.06