Finding the Fourth Proportional to 2,690.55, 3,712.62 and 1,556.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,690.55 : 3,712.62 = 1,556.41 : x
2. Step 2: Convert to fraction form
   2,690.55/3,712.62 = 1,556.41/x
3. Step 3: Cross multiply
   2,690.55x = 3,712.62 × 1,556.41
4. Step 4: Simplify right side
   2,690.55x = 5,778,358.89
5. Step 5: Solve for x
   x = 5,778,358.89/2,690.55
6. Step 6: Final answer
   x = 2,147.65