Finding the Fourth Proportional to 1,556.34, 2,148.12 and 935.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,556.34 : 2,148.12 = 935.34 : x
2. Step 2: Convert to fraction form
   1,556.34/2,148.12 = 935.34/x
3. Step 3: Cross multiply
   1,556.34x = 2,148.12 × 935.34
4. Step 4: Simplify right side
   1,556.34x = 2,009,222.56
5. Step 5: Solve for x
   x = 2,009,222.56/1,556.34
6. Step 6: Final answer
   x = 1,290.99