Finding the Fourth Proportional to 2,104.52, 3,157.47 and 874.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,104.52 : 3,157.47 = 874.31 : x
2. Step 2: Convert to fraction form
   2,104.52/3,157.47 = 874.31/x
3. Step 3: Cross multiply
   2,104.52x = 3,157.47 × 874.31
4. Step 4: Simplify right side
   2,104.52x = 2,760,607.60
5. Step 5: Solve for x
   x = 2,760,607.60/2,104.52
6. Step 6: Final answer
   x = 1,311.75