Finding the Fourth Proportional to 1,094.48, 1,510.38 and 628.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,094.48 : 1,510.38 = 628.72 : x
2. Step 2: Convert to fraction form
   1,094.48/1,510.38 = 628.72/x
3. Step 3: Cross multiply
   1,094.48x = 1,510.38 × 628.72
4. Step 4: Simplify right side
   1,094.48x = 949,606.11
5. Step 5: Solve for x
   x = 949,606.11/1,094.48
6. Step 6: Final answer
   x = 867.63