Finding the Fourth Proportional to 1,114.72, 1,673.12 and 1,047.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,114.72 : 1,673.12 = 1,047.76 : x
2. Step 2: Convert to fraction form
   1,114.72/1,673.12 = 1,047.76/x
3. Step 3: Cross multiply
   1,114.72x = 1,673.12 × 1,047.76
4. Step 4: Simplify right side
   1,114.72x = 1,753,028.21
5. Step 5: Solve for x
   x = 1,753,028.21/1,114.72
6. Step 6: Final answer
   x = 1,572.62