Finding the Fourth Proportional to 1,333.72, 1,840.62 and 744.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.72 : 1,840.62 = 744.31 : x
2. Step 2: Convert to fraction form
   1,333.72/1,840.62 = 744.31/x
3. Step 3: Cross multiply
   1,333.72x = 1,840.62 × 744.31
4. Step 4: Simplify right side
   1,333.72x = 1,369,991.87
5. Step 5: Solve for x
   x = 1,369,991.87/1,333.72
6. Step 6: Final answer
   x = 1,027.20