Finding the Fourth Proportional to 1,556.62, 2,336.34 and 1,391.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,556.62 : 2,336.34 = 1,391.83 : x
2. Step 2: Convert to fraction form
   1,556.62/2,336.34 = 1,391.83/x
3. Step 3: Cross multiply
   1,556.62x = 2,336.34 × 1,391.83
4. Step 4: Simplify right side
   1,556.62x = 3,251,788.10
5. Step 5: Solve for x
   x = 3,251,788.10/1,556.62
6. Step 6: Final answer
   x = 2,089.01