Finding the Fourth Proportional to 1,399.87, 2,099.94 and 741.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,399.87 : 2,099.94 = 741.61 : x
2. Step 2: Convert to fraction form
   1,399.87/2,099.94 = 741.61/x
3. Step 3: Cross multiply
   1,399.87x = 2,099.94 × 741.61
4. Step 4: Simplify right side
   1,399.87x = 1,557,336.50
5. Step 5: Solve for x
   x = 1,557,336.50/1,399.87
6. Step 6: Final answer
   x = 1,112.49