Finding the Fourth Proportional to 1,094.31, 1,510.46 and 628.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,094.31 : 1,510.46 = 628.71 : x
2. Step 2: Convert to fraction form
   1,094.31/1,510.46 = 628.71/x
3. Step 3: Cross multiply
   1,094.31x = 1,510.46 × 628.71
4. Step 4: Simplify right side
   1,094.31x = 949,638.16
5. Step 5: Solve for x
   x = 949,638.16/1,094.31
6. Step 6: Final answer
   x = 867.80