Finding the Fourth Proportional to 1,336.78, 1,844.73 and 747.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,336.78 : 1,844.73 = 747.31 : x
2. Step 2: Convert to fraction form
   1,336.78/1,844.73 = 747.31/x
3. Step 3: Cross multiply
   1,336.78x = 1,844.73 × 747.31
4. Step 4: Simplify right side
   1,336.78x = 1,378,585.18
5. Step 5: Solve for x
   x = 1,378,585.18/1,336.78
6. Step 6: Final answer
   x = 1,031.27