Finding the Fourth Proportional to 1,333.55, 1,840.31 and 744.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.55 : 1,840.31 = 744.21 : x
2. Step 2: Convert to fraction form
   1,333.55/1,840.31 = 744.21/x
3. Step 3: Cross multiply
   1,333.55x = 1,840.31 × 744.21
4. Step 4: Simplify right side
   1,333.55x = 1,369,573.38
5. Step 5: Solve for x
   x = 1,369,573.38/1,333.55
6. Step 6: Final answer
   x = 1,027.02