Finding the Fourth Proportional to 1,236.50, 1,705.56 and 738.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,236.50 : 1,705.56 = 738.76 : x
2. Step 2: Convert to fraction form
   1,236.50/1,705.56 = 738.76/x
3. Step 3: Cross multiply
   1,236.50x = 1,705.56 × 738.76
4. Step 4: Simplify right side
   1,236.50x = 1,259,999.51
5. Step 5: Solve for x
   x = 1,259,999.51/1,236.50
6. Step 6: Final answer
   x = 1,019.00