Finding the Fourth Proportional to 1,139.39, 1,571.82 and 741.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139.39 : 1,571.82 = 741.02 : x
2. Step 2: Convert to fraction form
   1,139.39/1,571.82 = 741.02/x
3. Step 3: Cross multiply
   1,139.39x = 1,571.82 × 741.02
4. Step 4: Simplify right side
   1,139.39x = 1,164,750.06
5. Step 5: Solve for x
   x = 1,164,750.06/1,139.39
6. Step 6: Final answer
   x = 1,022.26