Finding the Fourth Proportional to 2,799.42, 3,863.37 and 1,557.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,799.42 : 3,863.37 = 1,557.42 : x
2. Step 2: Convert to fraction form
   2,799.42/3,863.37 = 1,557.42/x
3. Step 3: Cross multiply
   2,799.42x = 3,863.37 × 1,557.42
4. Step 4: Simplify right side
   2,799.42x = 6,016,889.71
5. Step 5: Solve for x
   x = 6,016,889.71/2,799.42
6. Step 6: Final answer
   x = 2,149.33