Finding the Fourth Proportional to 1,113.03, 1,667.55 and 1,047.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,113.03 : 1,667.55 = 1,047.16 : x
2. Step 2: Convert to fraction form
   1,113.03/1,667.55 = 1,047.16/x
3. Step 3: Cross multiply
   1,113.03x = 1,667.55 × 1,047.16
4. Step 4: Simplify right side
   1,113.03x = 1,746,189.73
5. Step 5: Solve for x
   x = 1,746,189.73/1,113.03
6. Step 6: Final answer
   x = 1,568.85