Finding the Fourth Proportional to 1,619.72, 2,428.81 and 741.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,619.72 : 2,428.81 = 741.96 : x
2. Step 2: Convert to fraction form
   1,619.72/2,428.81 = 741.96/x
3. Step 3: Cross multiply
   1,619.72x = 2,428.81 × 741.96
4. Step 4: Simplify right side
   1,619.72x = 1,802,078.01
5. Step 5: Solve for x
   x = 1,802,078.01/1,619.72
6. Step 6: Final answer
   x = 1,112.59