Finding the Fourth Proportional to 1,108.72, 1,665.06 and 1,052.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,108.72 : 1,665.06 = 1,052.02 : x
2. Step 2: Convert to fraction form
   1,108.72/1,665.06 = 1,052.02/x
3. Step 3: Cross multiply
   1,108.72x = 1,665.06 × 1,052.02
4. Step 4: Simplify right side
   1,108.72x = 1,751,676.42
5. Step 5: Solve for x
   x = 1,751,676.42/1,108.72
6. Step 6: Final answer
   x = 1,579.91