Finding the Fourth Proportional to 2,522.79, 3,481.55 and 1,388.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,522.79 : 3,481.55 = 1,388.52 : x
2. Step 2: Convert to fraction form
   2,522.79/3,481.55 = 1,388.52/x
3. Step 3: Cross multiply
   2,522.79x = 3,481.55 × 1,388.52
4. Step 4: Simplify right side
   2,522.79x = 4,834,194.86
5. Step 5: Solve for x
   x = 4,834,194.86/2,522.79
6. Step 6: Final answer
   x = 1,916.21