Finding the Fourth Proportional to 2,304.42, 3,178.32 and 1,557.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,304.42 : 3,178.32 = 1,557.20 : x
2. Step 2: Convert to fraction form
   2,304.42/3,178.32 = 1,557.20/x
3. Step 3: Cross multiply
   2,304.42x = 3,178.32 × 1,557.20
4. Step 4: Simplify right side
   2,304.42x = 4,949,264.01
5. Step 5: Solve for x
   x = 4,949,264.01/2,304.42
6. Step 6: Final answer
   x = 2,147.73