Finding the Fourth Proportional to 941.31, 1,298.56 and 626.72

Step by Step Solution

1. Step 1: Write the proportion equation
   941.31 : 1,298.56 = 626.72 : x
2. Step 2: Convert to fraction form
   941.31/1,298.56 = 626.72/x
3. Step 3: Cross multiply
   941.31x = 1,298.56 × 626.72
4. Step 4: Simplify right side
   941.31x = 813,833.52
5. Step 5: Solve for x
   x = 813,833.52/941.31
6. Step 6: Final answer
   x = 864.58