Finding the Fourth Proportional to 2,522.99, 3,786.34 and 1,274.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,522.99 : 3,786.34 = 1,274.78 : x
2. Step 2: Convert to fraction form
   2,522.99/3,786.34 = 1,274.78/x
3. Step 3: Cross multiply
   2,522.99x = 3,786.34 × 1,274.78
4. Step 4: Simplify right side
   2,522.99x = 4,826,750.51
5. Step 5: Solve for x
   x = 4,826,750.51/2,522.99
6. Step 6: Final answer
   x = 1,913.11