Finding the Fourth Proportional to 1,523.72, 2,103.56 and 1,057.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,523.72 : 2,103.56 = 1,057.16 : x
2. Step 2: Convert to fraction form
   1,523.72/2,103.56 = 1,057.16/x
3. Step 3: Cross multiply
   1,523.72x = 2,103.56 × 1,057.16
4. Step 4: Simplify right side
   1,523.72x = 2,223,799.49
5. Step 5: Solve for x
   x = 2,223,799.49/1,523.72
6. Step 6: Final answer
   x = 1,459.45