Finding the Fourth Proportional to 1,047.82, 1,445.94 and 628.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.82 : 1,445.94 = 628.08 : x
2. Step 2: Convert to fraction form
   1,047.82/1,445.94 = 628.08/x
3. Step 3: Cross multiply
   1,047.82x = 1,445.94 × 628.08
4. Step 4: Simplify right side
   1,047.82x = 908,166.00
5. Step 5: Solve for x
   x = 908,166.00/1,047.82
6. Step 6: Final answer
   x = 866.72