Finding the Fourth Proportional to 1,293.56, 1,938.61 and 634.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,293.56 : 1,938.61 = 634.43 : x
2. Step 2: Convert to fraction form
   1,293.56/1,938.61 = 634.43/x
3. Step 3: Cross multiply
   1,293.56x = 1,938.61 × 634.43
4. Step 4: Simplify right side
   1,293.56x = 1,229,909.52
5. Step 5: Solve for x
   x = 1,229,909.52/1,293.56
6. Step 6: Final answer
   x = 950.79