Finding the Fourth Proportional to 1,094.50, 1,510.50 and 628.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,094.50 : 1,510.50 = 628.84 : x
2. Step 2: Convert to fraction form
   1,094.50/1,510.50 = 628.84/x
3. Step 3: Cross multiply
   1,094.50x = 1,510.50 × 628.84
4. Step 4: Simplify right side
   1,094.50x = 949,862.82
5. Step 5: Solve for x
   x = 949,862.82/1,094.50
6. Step 6: Final answer
   x = 867.85