Finding the Fourth Proportional to 1,557.72, 2,324.52 and 1,394.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,557.72 : 2,324.52 = 1,394.28 : x
2. Step 2: Convert to fraction form
   1,557.72/2,324.52 = 1,394.28/x
3. Step 3: Cross multiply
   1,557.72x = 2,324.52 × 1,394.28
4. Step 4: Simplify right side
   1,557.72x = 3,241,031.75
5. Step 5: Solve for x
   x = 3,241,031.75/1,557.72
6. Step 6: Final answer
   x = 2,080.63