Finding the Fourth Proportional to 2,522.68, 3,784.38 and 1,290.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,522.68 : 3,784.38 = 1,290.88 : x
2. Step 2: Convert to fraction form
   2,522.68/3,784.38 = 1,290.88/x
3. Step 3: Cross multiply
   2,522.68x = 3,784.38 × 1,290.88
4. Step 4: Simplify right side
   2,522.68x = 4,885,180.45
5. Step 5: Solve for x
   x = 4,885,180.45/2,522.68
6. Step 6: Final answer
   x = 1,936.50