Finding the Fourth Proportional to 1,391.58, 2,086.83 and 741.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,391.58 : 2,086.83 = 741.96 : x
2. Step 2: Convert to fraction form
   1,391.58/2,086.83 = 741.96/x
3. Step 3: Cross multiply
   1,391.58x = 2,086.83 × 741.96
4. Step 4: Simplify right side
   1,391.58x = 1,548,344.39
5. Step 5: Solve for x
   x = 1,548,344.39/1,391.58
6. Step 6: Final answer
   x = 1,112.65