Finding the Fourth Proportional to 2,455.58, 3,388.76 and 1,393.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,455.58 : 3,388.76 = 1,393.42 : x
2. Step 2: Convert to fraction form
   2,455.58/3,388.76 = 1,393.42/x
3. Step 3: Cross multiply
   2,455.58x = 3,388.76 × 1,393.42
4. Step 4: Simplify right side
   2,455.58x = 4,721,965.96
5. Step 5: Solve for x
   x = 4,721,965.96/2,455.58
6. Step 6: Final answer
   x = 1,922.95